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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"  
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<head><title>11 Nodes</title> 
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   <h3 class="sectionHead"><span class="titlemark">11   </span> <a 
 id="x12-13600011"></a>Nodes</h3>
<!--l. 12--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.1   </span> <a 
 id="x12-13700011.1"></a>Nodes and Their Shapes</h4>
<!--l. 14--><p class="noindent">Ti<span 
class="cmti-10">k</span>Z&nbsp;offers an easy way of adding so-called <span 
class="cmti-10">nodes </span>to your pictures. In the simplest case, a node is just some text
that is placed at some coordinate. However, a node can also have a border drawn around it or have a more complex
background and foreground. Indeed, some nodes do not have a text at all, but consist solely of the background. You
can name nodes so that you can reference their coordinates later in the picture. However, <span 
class="cmti-10">nodes cannot be referenced</span>
<span 
class="cmti-10">across different pictures</span>.
<!--l. 23--><p class="indent">   There are no special <span class="TEX">T<span 
class="E">E</span>X</span>&nbsp;commands for adding a node to a picture; rather, there is path operation called <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span>
for this. Nodes are created whenever Ti<span 
class="cmti-10">k</span>Z&nbsp;encounters <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span> or <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span> at a point on a path where it would
expect a normal path operation (like <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span><span 
class="cmtt-10">&nbsp;(1,1)</span></span></span> or <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">sin</span><span 
class="cmtt-10">&nbsp;(1,1)</span></span></span>). It is also possible to give node specifications <span 
class="cmti-10">inside</span>
certain path operations as explained later.
<!--l. 30--><p class="indent">   The node operation is typically followed by some options, which apply only to the node. Then, you can
optionally <span 
class="cmti-10">name </span>the node by providing a name in round braces. Lastly, for the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span> operation you must provide
some label text for the node in curly braces, while for the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span> operation you may not. The node is placed at
the current position of the path <span 
class="cmti-10">after the path has been drawn</span>. Thus, all nodes are drawn &#8220;on top&#8221; of the path and
retained until the path is complete. If there are several nodes on a path, they are drawn on top of the path in the
order they are encountered.
<!--l. 41--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-223-" ><colgroup id="TBL-223-1g"><col 
id="TBL-223-1"><col 
id="TBL-223-2"></colgroup><tr  
 valign="baseline" id="TBL-223-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-223-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-223.svg" width="113.8061 " height="95.0208 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-223-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill[fill=examplefill]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;{first</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;{second</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0,2)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;{third</span><span 
class="cmtt-8">&nbsp;node};</span></div>                                                                                 </td></tr></table> </td>
</tr></table></div>
<!--l. 48--><p class="indent">   The syntax for specifying nodes is the following:
     <dl class="description"><dt class="description">
<span 
class="colorbox" id="colorbox83"><span id="textcolor84"><span 
class="cmtt-10">\path</span>&nbsp;&nbsp;...</span> <span 
class="cmtt-10">node</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">[</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">options</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">]</span></span></span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">name</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)</span></span></span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">at(</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">coordinate</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)</span></span></span><span 
class="cmtt-10">{</span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">text</span><span 
class="cmsy-10">&gt;</span><span 
class="cmtt-10">}</span>&nbsp;<span id="textcolor85">...<span 
class="cmtt-10">;</span></span></span> </dt><dd 
class="description">
<a 
 id="dx12-137001"></a>
<a 
 id="dx12-137002"></a>
     <!--l. 51--><p class="noindent">The effect of <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">at</span></span></span> is to place the node at the coordinate given after <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">at</span></span></span> and not, as would normally be the
     case, at the last position. The <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">at</span></span></span> syntax is not available when a node is given inside a path operation
     (it would not make any sense, there).
     <!--l. 56--><p class="noindent">The <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">name</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)</span></span></span> is a name for later reference and it is optional. You may also add the option <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">name=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">name</span><span 
class="cmsy-10">&gt;</span>
     to the <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">option</span><span 
class="cmsy-10">&gt; </span>list; it has the same effect.
         <ul class="itemize1">
         <li class="itemize"><span 
class="cmtt-10">name</span><a 
 id="dx12-137003"></a><a 
 id="dx12-137004"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">node name</span><span 
class="cmsy-10">&gt; </span>assigns a name to the node for later reference. Since this is a &#8220;high-level&#8221; name
         (drivers never know of it), you can use spaces, number, letters, or whatever you like when naming
         a node. Thus, you can name a node just <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">1</span></span></span> or perhaps <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">start</span><span 
class="cmtt-10">&nbsp;of</span><span 
class="cmtt-10">&nbsp;chart</span></span></span> or even <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">y_1</span></span></span>. Your node
         name should <span 
class="cmti-10">not </span>contain any punctuation like a dot, a comma, or a colon since these are used to
         detect what kind of coordinate you mean when you reference a node.</li></ul>
                                                                                         
                                                                                         
     <!--l. 71--><p class="noindent">The <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">options</span><span 
class="cmsy-10">&gt; </span>is an optional list of options that <span 
class="cmti-10">apply only to the node </span>and have no effect outside. The other
     way round, most &#8220;outside&#8221; options also apply to the node, but not all. For example, the &#8220;outside&#8221; rotation
     does not apply to nodes (unless some special options are used, sigh). Also, the outside path action, like <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">draw</span></span></span>
     or <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">fill</span></span></span>, never applies to the node and must be given in the node (unless some special other options are used,
     deep sigh).
     <!--l. 79--><p class="noindent">As mentioned before, we can add a border and even a background to a node:
     <!--l. 81--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-224-" ><colgroup id="TBL-224-1g"><col 
id="TBL-224-1"><col 
id="TBL-224-2"></colgroup><tr  
 valign="baseline" id="TBL-224-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-224-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-224.svg" width="115.00609 " height="95.95412 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-224-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill[fill=examplefill]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;{first</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node[draw]</span><span 
class="cmtt-8">&nbsp;{second</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0,2)</span><span 
class="cmtt-8">&nbsp;node[fill=red!20,draw,double,rounded</span><span 
class="cmtt-8">&nbsp;corners]</span><span 
class="cmtt-8">&nbsp;{third</span><span 
class="cmtt-8">&nbsp;node};</span></div>                                       </td></tr></table> </td>
</tr></table></div>
     <!--l. 88--><p class="noindent">The &#8220;border&#8221; is actually just a special case of a much more general mechanism. Each node has a certain <span 
class="cmti-10">shape</span>
     which, by default, is a rectangle. However, we can also ask Ti<span 
class="cmti-10">k</span>Z&nbsp;to use a circle shape instead or an ellipse
     shape (you have to include <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pgflibraryshapes</span></span></span> for the latter shape):
     <!--l. 94--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-225-" ><colgroup id="TBL-225-1g"><col 
id="TBL-225-1"><col 
id="TBL-225-2"></colgroup><tr  
 valign="baseline" id="TBL-225-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-225-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-225.svg" width="131.56393 " height="121.94939 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-225-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill[fill=examplefill]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node{first</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node[ellipse,draw]</span><span 
class="cmtt-8">&nbsp;{second</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0,2)</span><span 
class="cmtt-8">&nbsp;node[circle,fill=red!20]</span><span 
class="cmtt-8">&nbsp;{third</span><span 
class="cmtt-8">&nbsp;node};</span></div>                                                            </td></tr></table> </td>
</tr></table></div>
     <!--l. 101--><p class="noindent">In the future, there might be much more complicated shapes available such as, say, a shape for a
     resistor or a shape for a state of a finite automaton or a shape for a <span 
class="cmcsc-10"><small 
class="small-caps">U</small><small 
class="small-caps">M</small><small 
class="small-caps">L</small> </span>class. Unfortunately,
     creating new shapes is a bit tricky and makes it necessary to use the basic layer directly. Life is
     hard.
     <!--l. 107--><p class="noindent">To select the shape of a node, the following option is used:
         <ul class="itemize1">
         <li class="itemize"><span 
class="cmtt-10">shape</span><a 
 id="dx12-137005"></a><a 
 id="dx12-137006"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">shape name</span><span 
class="cmsy-10">&gt; </span>select the shape either of the current node or, when this option is not given
         inside a node but somewhere outside, the shape of all nodes in the current scope.<a 
 id="dx12-137007"></a><a 
 id="dx12-137008"></a>
         <!--l. 115--><p class="noindent">Since this option is used often, you can leave out the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">shape=</span></span></span>. When Ti<span 
class="cmti-10">k</span>Z&nbsp;encounters an option
         like <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">circle</span></span></span> that it does not know, it will, after everything else has failed, check whether this
         option is the name of some shape. If so, that shape is selected as if you had said <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">shape=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">shape</span>
         <span 
class="cmti-10">name</span><span 
class="cmsy-10">&gt;</span>.
         <!--l. 121--><p class="noindent">By default, the following shapes are available: <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">rectangle</span></span></span>, <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">circle</span></span></span>, <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span>, and, when the
         package <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pgflibraryshapes</span></span></span> is loaded, also <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">ellipse</span></span></span>. Details of these shapes, like their anchors
         and size options, are discussed in Section&nbsp;<a 
href="#x12-14600011.8">11.8<!--tex4ht:ref: section-the-shapes --></a>.</li></ul>
     <!--l. 127--><p class="noindent">The following styles influences how nodes are rendered:
         <ul class="itemize1">
         <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">every node</span><a 
 id="dx12-137009"></a><a 
 id="dx12-137010"></a> This style is installed at the beginning of every node.
                                                                                         
                                                                                         
         <!--l. 131--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-226-" ><colgroup id="TBL-226-1g"><col 
id="TBL-226-1"><col 
id="TBL-226-2"></colgroup><tr  
 valign="baseline" id="TBL-226-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-226-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-226.svg" width="58.08026 " height="57.46912 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-226-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;node}=[draw]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;{A}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;{B};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
         </li>
         <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">every </span><span 
class="cmsy-10">&lt;</span><span 
class="cmitt-10">shape</span><span 
class="cmsy-10">&gt; </span><span 
class="cmtt-10">node</span><a 
 id="dx12-137011"></a><a 
 id="dx12-137012"></a> These styles are installed at the beginning of a node of a given <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">shape</span><span 
class="cmsy-10">&gt;</span>. For
         example, <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">every</span><span 
class="cmtt-10">&nbsp;rectangle</span><span 
class="cmtt-10">&nbsp;node</span></span></span> is used for rectangle nodes, and so on.
         <!--l. 142--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-227-" ><colgroup id="TBL-227-1g"><col 
id="TBL-227-1"><col 
id="TBL-227-2"></colgroup><tr  
 valign="baseline" id="TBL-227-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-227-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-227.svg" width="62.4033 " height="61.95885 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-227-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;rectangle</span><span 
class="cmtt-8">&nbsp;node}=[draw]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;node}=</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;[draw,double]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[rectangle]</span><span 
class="cmtt-8">&nbsp;{A}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node[circle]</span><span 
class="cmtt-8">&nbsp;{B};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
         </li></ul>
     </dd></dl>
<!--l. 152--><p class="indent">   The is a special syntax for specifying &#8220;light-weighed&#8221; nodes:
<!--l. 154--><p class="indent">
     <dl class="description"><dt class="description">
<span 
class="colorbox" id="colorbox86"><span id="textcolor87"><span 
class="cmtt-10">\path</span>&nbsp;&nbsp;...</span> <span 
class="cmtt-10">coordinate</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">[</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">options</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">]</span></span></span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">name</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)</span></span></span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">at(</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">coordinate</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)</span></span></span>&nbsp;<span id="textcolor88">...<span 
class="cmtt-10">;</span></span></span> </dt><dd 
class="description">
<a 
 id="dx12-137013"></a>
<a 
 id="dx12-137014"></a>
     <!--l. 155--><p class="noindent">This has the same effect as
     <!--l. 157--><p class="noindent"><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node[shape=coordinate][</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">options</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">](</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">name</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)at(</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">coordinate</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">){}</span></span></span>,
     <!--l. 159--><p class="noindent">where the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">at</span></span></span> part might be missing. </dd></dl>
<!--l. 164--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.2   </span> <a 
 id="x12-13800011.2"></a>Multi-Part Nodes</h4>
<!--l. 166--><p class="noindent">Most nodes just have a single simple text label. However, nodes of a more complicated shapes might be made up
from several <span 
class="cmti-10">node parts</span>. For example, in automata theory a so-called Moore state has a state name, drawn in the
upper part of the state circle, and an output text, drawn in the lower part of the state circle. These two parts are
quite independent. Similarly, a <span 
class="cmcsc-10"><small 
class="small-caps">U</small><small 
class="small-caps">M</small><small 
class="small-caps">L</small> </span>class shape would have a name part, a method part, and an attributes part.
Different molecule shape might use parts for the different atoms to be drawn at the different positions, and so
on.
<!--l. 176--><p class="indent">   Both <span 
class="cmcsc-10"><small 
class="small-caps">P</small><small 
class="small-caps">G</small><small 
class="small-caps">F</small></span>&nbsp;and Ti<span 
class="cmti-10">k</span>Z&nbsp;support such multipart nodes. On the lower level, <span 
class="cmcsc-10"><small 
class="small-caps">P</small><small 
class="small-caps">G</small><small 
class="small-caps">F</small></span>&nbsp;provides a system for specifying
that a shape consists of several parts. On the Ti<span 
class="cmti-10">k</span>Z&nbsp;level, you specify the different node parts by using the following
command:
<!--l. 181--><p class="indent">
     <dl class="description"><dt class="description">
<span 
class="colorbox" id="colorbox89"><span 
class="cmtt-10">\nodepart</span><span 
class="cmtt-10">{</span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">part name</span><span 
class="cmsy-10">&gt;</span><span 
class="cmtt-10">}</span></span> </dt><dd 
class="description">
<a 
 id="dx12-138001"></a>
     <!--l. 182--><p class="noindent">This command can only be used inside the <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">text</span><span 
class="cmsy-10">&gt; </span>argument of a <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span> path operation. It works a little
     bit like a <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">\part</span></span></span> command in <span class="LATEX">L<span class="A">A</span><span class="TEX">T<span 
class="E">E</span>X</span></span>. It will stop the typesetting of whatever node part was typeset
     until now and then start putting all following text into the node part named <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">part name</span><span 
class="cmsy-10">&gt;</span>--until another
     <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">\partname</span></span></span> is encountered or until the node <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">text</span><span 
class="cmsy-10">&gt; </span>ends.
                                                                                         
                                                                                         
     <!--l. 189--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-228-" ><colgroup id="TBL-228-1g"><col 
id="TBL-228-1"><col 
id="TBL-228-2"></colgroup><tr  
 valign="baseline" id="TBL-228-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-228-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-228.svg" width="44.43355 " height="44.43355 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-228-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\node</span><span 
class="cmtt-8">&nbsp;[state</span><span 
class="cmtt-8">&nbsp;with</span><span 
class="cmtt-8">&nbsp;output,draw,double,fill=red!20]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;No</span><span 
class="cmsltt-10x-x-80">&nbsp;\nodepart</span><span 
class="cmsltt-10x-x-80">&nbsp;has</span><span 
class="cmsltt-10x-x-80">&nbsp;been</span><span 
class="cmsltt-10x-x-80">&nbsp;used,</span><span 
class="cmsltt-10x-x-80">&nbsp;yet.</span><span 
class="cmsltt-10x-x-80">&nbsp;So,</span><span 
class="cmsltt-10x-x-80">&nbsp;the</span><span 
class="cmsltt-10x-x-80">&nbsp;following</span><span 
class="cmsltt-10x-x-80">&nbsp;is</span><span 
class="cmsltt-10x-x-80">&nbsp;put</span><span 
class="cmsltt-10x-x-80">&nbsp;in</span><span 
class="cmsltt-10x-x-80">&nbsp;the</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;``text''</span><span 
class="cmsltt-10x-x-80">&nbsp;node</span><span 
class="cmsltt-10x-x-80">&nbsp;part</span><span 
class="cmsltt-10x-x-80">&nbsp;by</span><span 
class="cmsltt-10x-x-80">&nbsp;default.</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;$q_1$</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\nodepart{output}</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;Ok,</span><span 
class="cmsltt-10x-x-80">&nbsp;end</span><span 
class="cmsltt-10x-x-80">&nbsp;``text''</span><span 
class="cmsltt-10x-x-80">&nbsp;part,</span><span 
class="cmsltt-10x-x-80">&nbsp;start</span><span 
class="cmsltt-10x-x-80">&nbsp;``output''</span><span 
class="cmsltt-10x-x-80">&nbsp;part</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;$00$</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;};</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;output</span><span 
class="cmsltt-10x-x-80">&nbsp;part</span><span 
class="cmsltt-10x-x-80">&nbsp;ended.</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     <!--l. 202--><p class="noindent">You will have to lookup which parts are defined by a shape.
     <!--l. 204--><p class="noindent">The following styles influences node parts:
         <ul class="itemize1">
         <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">every </span><span 
class="cmsy-10">&lt;</span><span 
class="cmitt-10">part name</span><span 
class="cmsy-10">&gt; </span><span 
class="cmtt-10">node part</span><a 
 id="dx12-138002"></a><a 
 id="dx12-138003"></a> This style is installed at the beginning of every node part named
         <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">part name</span><span 
class="cmsy-10">&gt;</span>.
         <!--l. 209--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-229-" ><colgroup id="TBL-229-1g"><col 
id="TBL-229-1"><col 
id="TBL-229-2"></colgroup><tr  
 valign="baseline" id="TBL-229-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-229-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-229.svg" width="43.10022 " height="43.10022 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-229-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;output</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;part}=[red]</span>
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\node</span><span 
class="cmtt-8">&nbsp;[state</span><span 
class="cmtt-8">&nbsp;with</span><span 
class="cmtt-8">&nbsp;output,draw]</span><span 
class="cmtt-8">&nbsp;{$q_1$</span><span 
class="cmtt-8">&nbsp;\nodepart{output}</span><span 
class="cmtt-8">&nbsp;$00$};</span></div>                                          </td></tr></table> </td>
</tr></table></div>
         </li></ul>
     </dd></dl>
<!--l. 218--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.3   </span> <a 
 id="x12-13900011.3"></a>Options for the Text in Nodes</h4>
<!--l. 220--><p class="noindent">The simplest option for the text in nodes is its color. Normally, this color is just the last color installed using
<span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">color=</span></span></span>, possibly inherited from another scope. However, it is possible to specificly set the color used for text using
the following option:
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">text</span><a 
 id="dx12-139001"></a><a 
 id="dx12-139002"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">color</span><span 
class="cmsy-10">&gt; </span>Sets the color to be used for text labels. A <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">color=</span></span></span> option will immediately override this
     option.
     <!--l. 229--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-230-" ><colgroup id="TBL-230-1g"><col 
id="TBL-230-1"><col 
id="TBL-230-2"></colgroup><tr  
 valign="baseline" id="TBL-230-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-230-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-230.svg" width="128.7989 " height="57.61726 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-230-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[red]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;+(1,1)</span><span 
class="cmtt-8">&nbsp;node[above]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{red};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[text=red]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;+(1,1)</span><span 
class="cmtt-8">&nbsp;node[above]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{red};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(2,0)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;+(1,1)</span><span 
class="cmtt-8">&nbsp;node[above,red]</span><span 
class="cmtt-8">&nbsp;{red};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 238--><p class="indent">   Just like the color itself, you may also wish to set the opacity of the text only. For this, use the following
option:
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">text opacity</span><a 
 id="dx12-139003"></a><a 
 id="dx12-139004"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">value</span><span 
class="cmsy-10">&gt; </span>Sets the opacity of text labels.
                                                                                         
                                                                                         
     <!--l. 243--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-231-" ><colgroup id="TBL-231-1g"><col 
id="TBL-231-1"><col 
id="TBL-231-2"></colgroup><tr  
 valign="baseline" id="TBL-231-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-231-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-231.svg" width="122.39786 " height="96.85042 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-231-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[line</span><span 
class="cmtt-8">&nbsp;width=2mm,blue!50,cap=round]</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;grid</span><span 
class="cmtt-8">&nbsp;(3,2);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;node}=[fill,draw]</span>
<br>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\node[opacity=0.5]</span><span 
class="cmtt-8">&nbsp;at</span><span 
class="cmtt-8">&nbsp;(1.5,2)</span><span 
class="cmtt-8">&nbsp;{Upper</span><span 
class="cmtt-8">&nbsp;node};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\node[draw</span><span 
class="cmtt-8">&nbsp;opacity=0.8,fill</span><span 
class="cmtt-8">&nbsp;opacity=0.2,text</span><span 
class="cmtt-8">&nbsp;opacity=1]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;at</span><span 
class="cmtt-8">&nbsp;(1.5,0)</span><span 
class="cmtt-8">&nbsp;{Lower</span><span 
class="cmtt-8">&nbsp;node};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 255--><p class="indent">   Next, you may wish to adjust the font used for the text. Use the following option for this:
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">font</span><a 
 id="dx12-139005"></a><a 
 id="dx12-139006"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">font commands</span><span 
class="cmsy-10">&gt; </span>Sets the font used for text labels.
     <!--l. 260--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-232-" ><colgroup id="TBL-232-1g"><col 
id="TBL-232-1"><col 
id="TBL-232-2"></colgroup><tr  
 valign="baseline" id="TBL-232-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-232-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-232.svg" width="58.12878 " height="57.61726 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-232-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[font=\itshape]</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;+(1,1)</span><span 
class="cmtt-8">&nbsp;node[above]</span><span 
class="cmtt-8">&nbsp;{italic};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     <!--l. 265--><p class="noindent">A perhaps more useful example is the following:
     <!--l. 267--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-233-" ><colgroup id="TBL-233-1g"><col 
id="TBL-233-1"><col 
id="TBL-233-2"></colgroup><tr  
 valign="baseline" id="TBL-233-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-233-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-233.svg" width="56.44781 " height="56.44781 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-233-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;part}=[font=\itshape]</span>
<br><span 
class="cmtt-8">\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;output</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;part}=[font=\footnotesize]</span>
<br><span 
class="cmtt-8">\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;state</span><span 
class="cmtt-8">&nbsp;with</span><span 
class="cmtt-8">&nbsp;output</span><span 
class="cmtt-8">&nbsp;node}=[draw]</span>
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\node</span><span 
class="cmtt-8">&nbsp;[state</span><span 
class="cmtt-8">&nbsp;with</span><span 
class="cmtt-8">&nbsp;output]</span><span 
class="cmtt-8">&nbsp;{state</span><span 
class="cmtt-8">&nbsp;\nodepart{output}</span><span 
class="cmtt-8">&nbsp;output};</span></div>                                             </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 276--><p class="indent">   Normally, when a node is typeset, all the text you give in the braces is but in one long line (in an <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">\hbox</span></span></span>, to be
precise) and the node will become as wide as necessary.
<!--l. 280--><p class="indent">   You can change this behaviour using the following options. They allow you to limit the width of a node
(naturally, at the expense of its height).
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">text width</span><a 
 id="dx12-139007"></a><a 
 id="dx12-139008"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>This option will put the text of a node in a box of the given width (more
     precisely, in a <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">{minipage}</span></span></span> of this width; for plain <span class="TEX">T<span 
class="E">E</span>X</span>&nbsp;a rudimentary &#8220;minipage emulation&#8221; is used).
     <!--l. 290--><p class="noindent">If the node text is not as wide as <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt;</span>, it will nevertheless be put in a box of this width. If it
     is larger, line breaking will be done.
     <!--l. 294--><p class="noindent">By default, when this option is given, a ragged right border will be used. This is sensible since, typically, these
     boxes are narrow and justifying the text looks ugly.
     <!--l. 297--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-234-" ><colgroup id="TBL-234-1g"><col 
id="TBL-234-1"><col 
id="TBL-234-2"></colgroup><tr  
 valign="baseline" id="TBL-234-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-234-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-234.svg" width="123.69846 " height="83.14685 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-234-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill,text</span><span 
class="cmtt-8">&nbsp;width=3cm]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{This</span><span 
class="cmtt-8">&nbsp;is</span><span 
class="cmtt-8">&nbsp;a</span><span 
class="cmtt-8">&nbsp;demonstration</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;for</span><span 
class="cmtt-8">&nbsp;showing</span><span 
class="cmtt-8">&nbsp;how</span><span 
class="cmtt-8">&nbsp;line</span><span 
class="cmtt-8">&nbsp;breaking</span><span 
class="cmtt-8">&nbsp;works.};</span></div>                                        </td></tr></table> </td>
</tr></table></div>
                                                                                         
                                                                                         
     </li>
     <li class="itemize"><span 
class="cmtt-10">text justified</span><a 
 id="dx12-139009"></a><a 
 id="dx12-139010"></a> causes the text to be justified instead of (right)ragged. Use this only with pretty broad
     nodes.
     <!--l. 306--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-235-" ><colgroup id="TBL-235-1g"><col 
id="TBL-235-1"><col 
id="TBL-235-2"></colgroup><tr  
 valign="baseline" id="TBL-235-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-235-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-235.svg" width="123.69846 " height="83.14685 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-235-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill,text</span><span 
class="cmtt-8">&nbsp;width=3cm,text</span><span 
class="cmtt-8">&nbsp;justified]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{This</span><span 
class="cmtt-8">&nbsp;is</span><span 
class="cmtt-8">&nbsp;a</span><span 
class="cmtt-8">&nbsp;demonstration</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;for</span><span 
class="cmtt-8">&nbsp;showing</span><span 
class="cmtt-8">&nbsp;how</span><span 
class="cmtt-8">&nbsp;line</span><span 
class="cmtt-8">&nbsp;breaking</span><span 
class="cmtt-8">&nbsp;works.};</span></div>                                        </td></tr></table> </td>
</tr></table></div>
     <!--l. 311--><p class="noindent">In the above example, <span class="TEX">T<span 
class="E">E</span>X</span>&nbsp;complains (rightfully) about three very badly typeset lines. (For this
     manual I asked <span class="TEX">T<span 
class="E">E</span>X</span>&nbsp;to stop complaining by using <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">\hbadness=10000</span></span></span>, but this is a foul deed,
     indeed.)
     </li>
     <li class="itemize"><span 
class="cmtt-10">text ragged</span><a 
 id="dx12-139011"></a><a 
 id="dx12-139012"></a> causes the text to be typeset with a ragged right. This uses the original plain <span class="TEX">T<span 
class="E">E</span>X</span>&nbsp;definition of
     a ragged right border, in which <span class="TEX">T<span 
class="E">E</span>X</span>&nbsp;will try to balance the right border as well as possible. This is the
     default.
     <!--l. 320--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-236-" ><colgroup id="TBL-236-1g"><col 
id="TBL-236-1"><col 
id="TBL-236-2"></colgroup><tr  
 valign="baseline" id="TBL-236-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-236-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-236.svg" width="123.69846 " height="83.14685 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-236-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill,text</span><span 
class="cmtt-8">&nbsp;width=3cm,text</span><span 
class="cmtt-8">&nbsp;ragged]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{This</span><span 
class="cmtt-8">&nbsp;is</span><span 
class="cmtt-8">&nbsp;a</span><span 
class="cmtt-8">&nbsp;demonstration</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;for</span><span 
class="cmtt-8">&nbsp;showing</span><span 
class="cmtt-8">&nbsp;how</span><span 
class="cmtt-8">&nbsp;line</span><span 
class="cmtt-8">&nbsp;breaking</span><span 
class="cmtt-8">&nbsp;works.};</span></div>                                        </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">text badly ragged</span><a 
 id="dx12-139013"></a><a 
 id="dx12-139014"></a> causes the right border to be ragged in the <span class="LATEX">L<span class="A">A</span><span class="TEX">T<span 
class="E">E</span>X</span></span>-style, in which no balancing
     occurs. This looks ugly, but it may be useful for very narrow boxes and when you wish to avoid
     hyphenations.
     <!--l. 328--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-237-" ><colgroup id="TBL-237-1g"><col 
id="TBL-237-1"><col 
id="TBL-237-2"></colgroup><tr  
 valign="baseline" id="TBL-237-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-237-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-237.svg" width="123.69846 " height="179.14648 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-237-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill,text</span><span 
class="cmtt-8">&nbsp;width=3cm,text</span><span 
class="cmtt-8">&nbsp;badly</span><span 
class="cmtt-8">&nbsp;ragged]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{This</span><span 
class="cmtt-8">&nbsp;is</span><span 
class="cmtt-8">&nbsp;a</span><span 
class="cmtt-8">&nbsp;demonstration</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;for</span><span 
class="cmtt-8">&nbsp;showing</span><span 
class="cmtt-8">&nbsp;how</span><span 
class="cmtt-8">&nbsp;line</span><span 
class="cmtt-8">&nbsp;breaking</span><span 
class="cmtt-8">&nbsp;works.};</span></div>                                        </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">text centered</span><a 
 id="dx12-139015"></a><a 
 id="dx12-139016"></a> centers the text, but tries to balance the lines.
     <!--l. 334--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-238-" ><colgroup id="TBL-238-1g"><col 
id="TBL-238-1"><col 
id="TBL-238-2"></colgroup><tr  
 valign="baseline" id="TBL-238-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-238-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-238.svg" width="123.69846 " height="85.73946 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-238-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill,text</span><span 
class="cmtt-8">&nbsp;width=3cm,text</span><span 
class="cmtt-8">&nbsp;centered]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{This</span><span 
class="cmtt-8">&nbsp;is</span><span 
class="cmtt-8">&nbsp;a</span><span 
class="cmtt-8">&nbsp;demonstration</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;for</span><span 
class="cmtt-8">&nbsp;showing</span><span 
class="cmtt-8">&nbsp;how</span><span 
class="cmtt-8">&nbsp;line</span><span 
class="cmtt-8">&nbsp;breaking</span><span 
class="cmtt-8">&nbsp;works.};</span></div>                                        </td></tr></table> </td>
</tr></table></div>
                                                                                         
                                                                                         
     </li>
     <li class="itemize"><span 
class="cmtt-10">text badly centered</span><a 
 id="dx12-139017"></a><a 
 id="dx12-139018"></a> centers the text, without balancing the lines.
     <!--l. 340--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-239-" ><colgroup id="TBL-239-1g"><col 
id="TBL-239-1"><col 
id="TBL-239-2"></colgroup><tr  
 valign="baseline" id="TBL-239-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-239-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-239.svg" width="123.69846 " height="179.14648 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-239-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill,text</span><span 
class="cmtt-8">&nbsp;width=3cm,text</span><span 
class="cmtt-8">&nbsp;badly</span><span 
class="cmtt-8">&nbsp;centered]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{This</span><span 
class="cmtt-8">&nbsp;is</span><span 
class="cmtt-8">&nbsp;a</span><span 
class="cmtt-8">&nbsp;demonstration</span><span 
class="cmtt-8">&nbsp;text</span><span 
class="cmtt-8">&nbsp;for</span><span 
class="cmtt-8">&nbsp;showing</span><span 
class="cmtt-8">&nbsp;how</span><span 
class="cmtt-8">&nbsp;line</span><span 
class="cmtt-8">&nbsp;breaking</span><span 
class="cmtt-8">&nbsp;works.};</span></div>                                        </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 348--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.4   </span> <a 
 id="x12-14000011.4"></a>Placing Nodes Using Anchors</h4>
<!--l. 350--><p class="noindent">When you place a node at some coordinate, the node is centered on this coordinate by default. This is often
undesirable and it would be better to have the node to the right or above the actual coordinate.
<!--l. 354--><p class="indent">   <span 
class="cmcsc-10"><small 
class="small-caps">P</small><small 
class="small-caps">G</small><small 
class="small-caps">F</small></span>&nbsp;uses a so-called anchoring mechanism to give you a very fine control over the placement. The idea is simple:
Imaging a node of rectangular shape of a certain size. <span 
class="cmcsc-10"><small 
class="small-caps">P</small><small 
class="small-caps">G</small><small 
class="small-caps">F</small></span>&nbsp;defines numerous anchor positions in the shape. For
example to upper right corner is called, well, not &#8220;upper right anchor,&#8221; but the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">north</span><span 
class="cmtt-10">&nbsp;east</span></span></span> anchor of the shape.
The center of the shape has an anchor called <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">center</span></span></span> on top of it, and so on. Here are some examples (a complete
list is given in Section&nbsp;<a 
href="#x12-14600011.8">11.8<!--tex4ht:ref: section-the-shapes --></a>).
<!--l. 363--><p class="noindent"><object data="pgfmanual-240.svg" width="270.10464 " height="94.44304 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>
<!--l. 374--><p class="indent">   Now, when you place a node at a certain coordinate, you can ask Ti<span 
class="cmti-10">k</span>Z&nbsp;to place the node shifted around in such
a way that a certain anchor is at the coordinate. In the following example, we ask Ti<span 
class="cmti-10">k</span>Z&nbsp;to shift the first node such
that its <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">north</span><span 
class="cmtt-10">&nbsp;east</span></span></span> anchor is at coordinate <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(0,0)</span></span></span> and that the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">west</span></span></span> anchor of the second node is at coordinate
<span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(1,1)</span></span></span>.
<!--l. 381--><p class="noindent"><div class="obeylines-v"></div><object data="pgfmanual-241.svg" width="183.35683 " height="66.42416 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-240-" ><colgroup id="TBL-240-1g"><col 
id="TBL-240-1"></colgroup><tr  
 valign="baseline" id="TBL-240-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-240-1-1"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[anchor=north</span><span 
class="cmtt-8">&nbsp;east]</span><span 
class="cmtt-8">&nbsp;{first</span><span 
class="cmtt-8">&nbsp;node}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;rectangle</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node[anchor=west]</span><span 
class="cmtt-8">&nbsp;{second</span><span 
class="cmtt-8">&nbsp;node};</span></div>                                                  </td></tr></table> </td>
</tr></table>
</div>
<!--l. 386--><p class="indent">   Since the default anchor is <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">center</span></span></span>, the default behaviour is to shift the node in such a way that it is centered on
the current position.
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">anchor</span><a 
 id="dx12-140001"></a><a 
 id="dx12-140002"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">anchor name</span><span 
class="cmsy-10">&gt; </span>causes the node to be shifted such that it&#8217;s anchor <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">anchor name</span><span 
class="cmsy-10">&gt; </span>lies on the
     current coordinate.
     <!--l. 395--><p class="noindent">The only anchor that is present in all shapes is <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">center</span></span></span>. However, most shapes will at least define
     anchors in all &#8220;compass directions.&#8221; Furthermore, the standard shapes also define a <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">base</span></span></span> anchor, as
     well as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">base</span><span 
class="cmtt-10">&nbsp;west</span></span></span> and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">base</span><span 
class="cmtt-10">&nbsp;east</span></span></span>, for placing things on the baseline of the text.
                                                                                         
                                                                                         
     <!--l. 401--><p class="noindent">The standard shapes also define a <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">mid</span></span></span> anchor (and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">mid</span><span 
class="cmtt-10">&nbsp;west</span></span></span> and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">mid</span><span 
class="cmtt-10">&nbsp;east</span></span></span>). This anchor is half the height of
     the character &#8220;x&#8221; above the base line. This anchor is useful for vertically centering multiple nodes that have
     different heights and depth. Here is an example:
     <!--l. 406--><p class="noindent"><div class="obeylines-v"></div><object data="pgfmanual-242.svg" width="159.80756 " height="170.36287 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-241-" ><colgroup id="TBL-241-1g"><col 
id="TBL-241-1"></colgroup><tr  
 valign="baseline" id="TBL-241-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-241-1-1"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}[scale=3,transform</span><span 
class="cmtt-8">&nbsp;shape]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;First,</span><span 
class="cmsltt-10x-x-80">&nbsp;center</span><span 
class="cmsltt-10x-x-80">&nbsp;alignment</span><span 
class="cmsltt-10x-x-80">&nbsp;-&gt;</span><span 
class="cmsltt-10x-x-80">&nbsp;wobbles</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[anchor=center]</span><span 
class="cmtt-8">&nbsp;(0,1)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{x}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0.5,1)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{y}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{t};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;Second,</span><span 
class="cmsltt-10x-x-80">&nbsp;base</span><span 
class="cmsltt-10x-x-80">&nbsp;alignment</span><span 
class="cmsltt-10x-x-80">&nbsp;-&gt;</span><span 
class="cmsltt-10x-x-80">&nbsp;no</span><span 
class="cmsltt-10x-x-80">&nbsp;wobble,</span><span 
class="cmsltt-10x-x-80">&nbsp;but</span><span 
class="cmsltt-10x-x-80">&nbsp;too</span><span 
class="cmsltt-10x-x-80">&nbsp;high</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[anchor=base]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,.5)</span><span 
class="cmtt-8">&nbsp;node{x}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0.5,.5)</span><span 
class="cmtt-8">&nbsp;node{y}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,.5)</span><span 
class="cmtt-8">&nbsp;node{t};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmsltt-10x-x-80">%</span><span 
class="cmsltt-10x-x-80">&nbsp;Third,</span><span 
class="cmsltt-10x-x-80">&nbsp;mid</span><span 
class="cmsltt-10x-x-80">&nbsp;alignment</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[anchor=mid]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{x}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0.5,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{y}</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{t};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 418--><p class="indent">   Unfortunately, while perfectly logical, it is often rather counter-intuitive that in order to place a node <span 
class="cmti-10">above </span>a
given point, you need to specify the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">south</span></span></span> anchor. For this reason, there are some useful options that allow you to
select the standard anchors more intuitively:
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">above</span><a 
 id="dx12-140003"></a><a 
 id="dx12-140004"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=south</span></span></span>. If the <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt; </span>is specified, the node is additionally shifted
     upwards by the given <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span>.
     <!--l. 428--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-242-" ><colgroup id="TBL-242-1g"><col 
id="TBL-242-1"><col 
id="TBL-242-2"></colgroup><tr  
 valign="baseline" id="TBL-242-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-242-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-243.svg" width="43.22119 " height="22.08041 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-242-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v"><br>
<span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;(2pt)</span><span 
class="cmtt-8">&nbsp;node[above]</span><span 
class="cmtt-8">&nbsp;{above};</span></div>                                                           </td></tr></table> </td>
</tr></table></div>
     <!--l. 431--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-243-" ><colgroup id="TBL-243-1g"><col 
id="TBL-243-1"><col 
id="TBL-243-2"></colgroup><tr  
 valign="baseline" id="TBL-243-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-243-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-244.svg" width="43.22119 " height="24.74707 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-243-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;(2pt)</span><span 
class="cmtt-8">&nbsp;node[above=2pt]</span><span 
class="cmtt-8">&nbsp;{above};</span></div>                                                       </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">above left</span><a 
 id="dx12-140005"></a><a 
 id="dx12-140006"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=south</span><span 
class="cmtt-10">&nbsp;east</span></span></span>. If the <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt; </span>is specified, the node is additionally
     shifted upwards and right by <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span>.
     <!--l. 438--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-244-" ><colgroup id="TBL-244-1g"><col 
id="TBL-244-1"><col 
id="TBL-244-2"></colgroup><tr  
 valign="baseline" id="TBL-244-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-244-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-245.svg" width="69.4878 " height="22.08041 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-244-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v"><br>
<span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;(2pt)</span><span 
class="cmtt-8">&nbsp;node[above</span><span 
class="cmtt-8">&nbsp;left]</span><span 
class="cmtt-8">&nbsp;{above</span><span 
class="cmtt-8">&nbsp;left};</span></div>                                                 </td></tr></table> </td>
</tr></table></div>
     <!--l. 441--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-245-" ><colgroup id="TBL-245-1g"><col 
id="TBL-245-1"><col 
id="TBL-245-2"></colgroup><tr  
 valign="baseline" id="TBL-245-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-245-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-246.svg" width="72.15445 " height="24.74707 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-245-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;(2pt)</span><span 
class="cmtt-8">&nbsp;node[above</span><span 
class="cmtt-8">&nbsp;left=2pt]</span><span 
class="cmtt-8">&nbsp;{above</span><span 
class="cmtt-8">&nbsp;left};</span></div>                                             </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">above right</span><a 
 id="dx12-140007"></a><a 
 id="dx12-140008"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=south</span><span 
class="cmtt-10">&nbsp;west</span></span></span>.
     <!--l. 446--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-246-" ><colgroup id="TBL-246-1g"><col 
id="TBL-246-1"><col 
id="TBL-246-2"></colgroup><tr  
 valign="baseline" id="TBL-246-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-246-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-247.svg" width="78.4137 " height="24.67302 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-246-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;(2pt)</span><span 
class="cmtt-8">&nbsp;node[above</span><span 
class="cmtt-8">&nbsp;right]</span><span 
class="cmtt-8">&nbsp;{above</span><span 
class="cmtt-8">&nbsp;right};</span></div>                                               </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">left</span><a 
 id="dx12-140009"></a><a 
 id="dx12-140010"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=east</span></span></span>.
     <!--l. 451--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-247-" ><colgroup id="TBL-247-1g"><col 
id="TBL-247-1"><col 
id="TBL-247-2"></colgroup><tr  
 valign="baseline" id="TBL-247-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-247-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-248.svg" width="31.71005 " height="19.1471 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-247-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\fill</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;circle</span><span 
class="cmtt-8">&nbsp;(2pt)</span><span 
class="cmtt-8">&nbsp;node[left]</span><span 
class="cmtt-8">&nbsp;{left};</span></div>                                                             </td></tr></table> </td>
</tr></table></div>
                                                                                         
                                                                                         
     </li>
     <li class="itemize"><span 
class="cmtt-10">right</span><a 
 id="dx12-140011"></a><a 
 id="dx12-140012"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=west</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">below</span><a 
 id="dx12-140013"></a><a 
 id="dx12-140014"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=north</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">below left</span><a 
 id="dx12-140015"></a><a 
 id="dx12-140016"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=north</span><span 
class="cmtt-10">&nbsp;east</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">below right</span><a 
 id="dx12-140017"></a><a 
 id="dx12-140018"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">offset</span><span 
class="cmsy-10">&gt;</span> does the same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">anchor=north</span><span 
class="cmtt-10">&nbsp;west</span></span></span>.</li></ul>
<!--l. 465--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.5   </span> <a 
 id="x12-14100011.5"></a>Transformations</h4>
<!--l. 467--><p class="noindent">It is possible to transform nodes, but, by default, transformations do not apply to nodes. The reason is that you
usually do <span 
class="cmti-10">not </span>want your text to be scaled or rotated even if the main graphic is transformed. Scaling text is evil,
rotating slightly less so.
<!--l. 472--><p class="indent">   However, sometimes you <span 
class="cmti-10">do </span>wish to transform a node, for example, it certainly sometimes makes sense to rotate
a node by 90 degrees. There are two ways in which you can achieve this:
<!--l. 476--><p class="indent">
     <ol type="1" class="enumerate1" >
     <li class="enumerate" value="1" 
><a 
 id="x12-141002x1"></a>You can use the following option:
         <ul class="itemize1">
         <li class="itemize"><span 
class="cmtt-10">transform shape</span><a 
 id="dx12-141003"></a><a 
 id="dx12-141004"></a> causes the current &#8220;external&#8221; transformation matrix to be applied to the shape.
         For example, if you said <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">\tikz[scale=3]</span></span></span> and then say <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node[transform</span><span 
class="cmtt-10">&nbsp;shape]</span><span 
class="cmtt-10">&nbsp;{X}</span></span></span>, you will
         get a &#8220;huge&#8221; X in your graphic.</li></ul>
     </li>
     <li class="enumerate" value="2" 
><a 
 id="x12-141006x2"></a>You can give transformation option <span 
class="cmti-10">inside </span>the option list of the node. <span 
class="cmti-10">These </span>transformations always apply to
     the node.
     <!--l. 489--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-248-" ><colgroup id="TBL-248-1g"><col 
id="TBL-248-1"><col 
id="TBL-248-2"></colgroup><tr  
 valign="baseline" id="TBL-248-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-248-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-249.svg" width="115.07718 " height="99.55656 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-248-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;node}=[draw]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[style=help</span><span 
class="cmtt-8">&nbsp;lines]</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;grid</span><span 
class="cmtt-8">&nbsp;(3,2);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;node{A}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(2,0)</span><span 
class="cmtt-8">&nbsp;node[rotate=90,scale=1.5]</span><span 
class="cmtt-8">&nbsp;{B};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[rotate=30]</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;node{A}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(2,0)</span><span 
class="cmtt-8">&nbsp;node[rotate=90,scale=1.5]</span><span 
class="cmtt-8">&nbsp;{B};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[rotate=60]</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;node[transform</span><span 
class="cmtt-8">&nbsp;shape]</span><span 
class="cmtt-8">&nbsp;{A}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(2,0)</span><span 
class="cmtt-8">&nbsp;node[transform</span><span 
class="cmtt-8">&nbsp;shape,rotate=90,scale=1.5]</span><span 
class="cmtt-8">&nbsp;{B};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ol>
<!--l. 505--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.6   </span> <a 
 id="x12-14200011.6"></a>Placing Nodes on a Line or Curve</h4>
<!--l. 507--><p class="noindent">Until now, we always placed node on a coordinate that is mentioned in the path. Often, however, we wish to place
nodes on &#8220;the middle&#8221; of a line and we do not wish to compute these coordinates &#8220;by hand.&#8221; To facilitate such
placements, Ti<span 
class="cmti-10">k</span>Z&nbsp;allows you to specify that a certain node should be somewhere &#8220;on&#8221; a line. There are two ways of
specifying this: Either explicitly by using the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos</span></span></span> option or implicitly by placing the node &#8220;inside&#8221; a path operation.
These two ways are described in the following.
                                                                                         
                                                                                         
<!--l. 518--><p class="noindent">
   <h5 class="subsubsectionHead"><span class="titlemark">11.6.1   </span> <a 
 id="x12-14300011.6.1"></a>Explicit Use of the Position Option</h5>
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">pos</span><a 
 id="dx12-143001"></a><a 
 id="dx12-143002"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">fraction</span><span 
class="cmsy-10">&gt; </span>When this option is given, the node is not anchored on the last coordinate. Rather, it is
     anchored on some point on the line from the previous coordinate to the current point. The <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">fraction</span><span 
class="cmsy-10">&gt;</span>
     dictates how &#8220;far&#8221; on the line the point should be. A <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">fraction</span><span 
class="cmsy-10">&gt; </span>or 0 is the previous coordinate, 1 is
     the current one, everything else is in between. In particular, 0.5 is the middle.
     <!--l. 532--><p class="noindent">Now, what is &#8220;the previous line&#8221;? This depends on the previous path construction operation.
     <!--l. 535--><p class="noindent">In the simplest case, the previous path operation was a &#8220;line-to&#8221; operation, that is, a <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">coordinate</span><span 
class="cmsy-10">&gt;</span>
     operation:
     <!--l. 537--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-249-" ><colgroup id="TBL-249-1g"><col 
id="TBL-249-1"><col 
id="TBL-249-2"></colgroup><tr  
 valign="baseline" id="TBL-249-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-249-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-250.svg" width="128.98334 " height="54.99373 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-249-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(3,1)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[pos=0]{0}</span><span 
class="cmtt-8">&nbsp;node[pos=0.5]{1/2}</span><span 
class="cmtt-8">&nbsp;node[pos=0.9]{9/10};</span></div>                                                    </td></tr></table> </td>
</tr></table></div>
     <!--l. 542--><p class="noindent">The next case is the curve-to operation (the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">..</span></span></span> operation). In this case, the &#8220;middle&#8221; of the
     curve, that is, the position <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">0.5</span></span></span> is not necessarily the point at the exact half distance on the line.
     Rather, it is some point at &#8220;time&#8221; 0.5 of a point traveling from the start of the curve, where it
     is at time 0, to the end of the curve, which it reaches at time 0.5. The &#8220;speed&#8221; of the point
     depends on the length of the support vectors (the vectors that connect the start and end points to
     the control points). The exact math is a bit complicated (depending on your point of view, of
     course); you may wish to consult a good book on computer graphics and B&eacute;zier curves if you are
     intrigued.
     <!--l. 553--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-250-" ><colgroup id="TBL-250-1g"><col 
id="TBL-250-1"><col 
id="TBL-250-2"></colgroup><tr  
 valign="baseline" id="TBL-250-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-250-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-251.svg" width="141.82294 " height="132.29097 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-250-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;controls</span><span 
class="cmtt-8">&nbsp;+(right:3.5cm)</span><span 
class="cmtt-8">&nbsp;and</span><span 
class="cmtt-8">&nbsp;+(right:3.5cm)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;(0,3)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\foreach</span><span 
class="cmtt-8">&nbsp;\p</span><span 
class="cmtt-8">&nbsp;in</span><span 
class="cmtt-8">&nbsp;{0,0.125,...,1}</span><span 
class="cmtt-8">&nbsp;{node[pos=\p]{\p}};</span></div>                                                        </td></tr></table> </td>
</tr></table></div>
     <!--l. 558--><p class="noindent">Another interesting case are the horizontal/vertical line-to operations <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">|-</span></span></span> and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">-|</span></span></span>. For them, the position (or
     time) <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">0.5</span></span></span> is exactly the corner point.
     <!--l. 562--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-251-" ><colgroup id="TBL-251-1g"><col 
id="TBL-251-1"><col 
id="TBL-251-2"></colgroup><tr  
 valign="baseline" id="TBL-251-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-251-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-252.svg" width="129.52113 " height="58.78766 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-251-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;|-</span><span 
class="cmtt-8">&nbsp;(3,1)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[pos=0]{0}</span><span 
class="cmtt-8">&nbsp;node[pos=0.5]{1/2}</span><span 
class="cmtt-8">&nbsp;node[pos=0.9]{9/10};</span></div>                                                      </td></tr></table> </td>
</tr></table></div>
     <!--l. 567--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-252-" ><colgroup id="TBL-252-1g"><col 
id="TBL-252-1"><col 
id="TBL-252-2"></colgroup><tr  
 valign="baseline" id="TBL-252-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-252-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-253.svg" width="140.36508 " height="53.57019 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-252-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;-|</span><span 
class="cmtt-8">&nbsp;(3,1)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[pos=0]{0}</span><span 
class="cmtt-8">&nbsp;node[pos=0.5]{1/2}</span><span 
class="cmtt-8">&nbsp;node[pos=0.9]{9/10};</span></div>                                                      </td></tr></table> </td>
</tr></table></div>
     <!--l. 572--><p class="noindent">For all other path construction operations, <span 
class="cmti-10">the position placement does not work</span>, currently. This will hopefully
     change in the future (especially for the arc operation).
                                                                                         
                                                                                         
     </li>
     <li class="itemize"><span 
class="cmtt-10">sloped</span><a 
 id="dx12-143003"></a><a 
 id="dx12-143004"></a> This option causes the node to be rotated such that a horizontal line becomes a tangent to the curve.
     The rotation will always be done in such a way that text is never &#8220;upside down.&#8221; If you really need upside
     down text, use <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">[rotate=180]</span></span></span>.
     <!--l. 580--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-253-" ><colgroup id="TBL-253-1g"><col 
id="TBL-253-1"><col 
id="TBL-253-2"></colgroup><tr  
 valign="baseline" id="TBL-253-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-253-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-254.svg" width="84.91765 " height="140.33492 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp;</td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-253-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;controls</span><span 
class="cmtt-8">&nbsp;+(up:2cm)</span><span 
class="cmtt-8">&nbsp;and</span><span 
class="cmtt-8">&nbsp;+(left:2cm)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;(1,3)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\foreach</span><span 
class="cmtt-8">&nbsp;\p</span><span 
class="cmtt-8">&nbsp;in</span><span 
class="cmtt-8">&nbsp;{0,0.25,...,1}</span><span 
class="cmtt-8">&nbsp;{node[sloped,above,pos=\p]{\p}};</span></div>                                            </td></tr></table> </td>
</tr></table></div>
     <!--l. 584--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-254-" ><colgroup id="TBL-254-1g"><col 
id="TBL-254-1"><col 
id="TBL-254-2"></colgroup><tr  
 valign="baseline" id="TBL-254-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-254-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-255.svg" width="77.40701 " height="55.31448 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-254-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}[-&gt;]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(2,0.5)</span><span 
class="cmtt-8">&nbsp;node[midway,sloped,above]</span><span 
class="cmtt-8">&nbsp;{$x$};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(2,-.5)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[midway,sloped,below]</span><span 
class="cmtt-8">&nbsp;{$y$};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 593--><p class="noindent">There exist styles for specifying positions a bit less &#8220;technically&#8221;:
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">midway</span><a 
 id="dx12-143005"></a><a 
 id="dx12-143006"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=0.5</span></span></span>.
     <!--l. 597--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-255-" ><colgroup id="TBL-255-1g"><col 
id="TBL-255-1"><col 
id="TBL-255-2"></colgroup><tr  
 valign="baseline" id="TBL-255-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-255-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-256.svg" width="140.52092 " height="207.33667 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-255-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\tikz</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;controls</span><span 
class="cmtt-8">&nbsp;+(up:2cm)</span><span 
class="cmtt-8">&nbsp;and</span><span 
class="cmtt-8">&nbsp;+(left:3cm)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;(1,5)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[at</span><span 
class="cmtt-8">&nbsp;end]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{|at</span><span 
class="cmtt-8">&nbsp;end|}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[very</span><span 
class="cmtt-8">&nbsp;near</span><span 
class="cmtt-8">&nbsp;end]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{|very</span><span 
class="cmtt-8">&nbsp;near</span><span 
class="cmtt-8">&nbsp;end|}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[near</span><span 
class="cmtt-8">&nbsp;end]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{|near</span><span 
class="cmtt-8">&nbsp;end|}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[midway]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{|midway|}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[near</span><span 
class="cmtt-8">&nbsp;start]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{|near</span><span 
class="cmtt-8">&nbsp;start|}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[very</span><span 
class="cmtt-8">&nbsp;near</span><span 
class="cmtt-8">&nbsp;start]</span><span 
class="cmtt-8">&nbsp;{|very</span><span 
class="cmtt-8">&nbsp;near</span><span 
class="cmtt-8">&nbsp;start|}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[at</span><span 
class="cmtt-8">&nbsp;start]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{|at</span><span 
class="cmtt-8">&nbsp;start|};</span></div>                                                                    </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">near start</span><a 
 id="dx12-143007"></a><a 
 id="dx12-143008"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=0.25</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">near end</span><a 
 id="dx12-143009"></a><a 
 id="dx12-143010"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=0.75</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">very near start</span><a 
 id="dx12-143011"></a><a 
 id="dx12-143012"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=0.125</span></span></span>.
                                                                                         
                                                                                         
     </li>
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">very near end</span><a 
 id="dx12-143013"></a><a 
 id="dx12-143014"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=0.875</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">at start</span><a 
 id="dx12-143015"></a><a 
 id="dx12-143016"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=0</span></span></span>.
     </li>
     <li class="itemize"><span 
class="cmtt-10">style=</span><span 
class="cmtt-10">at end</span><a 
 id="dx12-143017"></a><a 
 id="dx12-143018"></a> is set to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos=1</span></span></span>.</li></ul>
<!--l. 622--><p class="noindent">
   <h5 class="subsubsectionHead"><span class="titlemark">11.6.2   </span> <a 
 id="x12-14400011.6.2"></a>Implicit Use of the Position Option</h5>
<!--l. 624--><p class="noindent">When you wish to place a node on the line <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(0,0)</span><span 
class="cmtt-10">&nbsp;--</span><span 
class="cmtt-10">&nbsp;(1,1)</span></span></span>, it is natural to specify the node not following the
<span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(1,1)</span></span></span>, but &#8220;somewhere in the middle.&#8221; This is, indeed, possible and you can write <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(0,0)</span><span 
class="cmtt-10">&nbsp;--</span><span 
class="cmtt-10">&nbsp;node{a}</span><span 
class="cmtt-10">&nbsp;(1,1)</span></span></span> to
place a node midway between <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(0,0)</span></span></span> and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(1,1)</span></span></span>.
<!--l. 630--><p class="indent">   What happens is the following: The syntax of the line-to path operation is actually <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span> <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">node</span>
<span 
class="cmti-10">specification</span><span 
class="cmsy-10">&gt;</span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">coordinate</span><span 
class="cmsy-10">&gt;</span>. (It is even possible to give multiple nodes in this way.) When the optional <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span> is
encountered, that is, when the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span> is directly followed by <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">node</span></span></span>, then the specification(s) are read and &#8220;stored away.&#8221;
Then, after the <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">coordinate</span><span 
class="cmsy-10">&gt; </span>has finally been reached, they are inserted again, but with the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos</span></span></span> option
set.
<!--l. 640--><p class="indent">   There are two things to note about this: When a node specification is &#8220;stored,&#8221; its catcodes become fixed.
This means that you cannot use overly complicated verbatim text in them. If you really need, say, a
verbatim text, you will have to put it in a normal node following the coordinate and add the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos</span></span></span>
option.
<!--l. 646--><p class="indent">   Second, which <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos</span></span></span> is chosen for the node? The position is inherited from the surrounding scope. However, this
holds only for nodes specified in this implicit way. Thus, if you add the option <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">[near</span><span 
class="cmtt-10">&nbsp;end]</span></span></span> to a scope, this does not
mean that <span 
class="cmti-10">all </span>nodes given in this scope will be put on near the end of lines. Only the nodes for which an implicit
<span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos</span></span></span> is added will be placed near the end. Typically, this is what you want. Here are some examples that should
make this clearer:
<!--l. 655--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-256-" ><colgroup id="TBL-256-1g"><col 
id="TBL-256-1"><col 
id="TBL-256-2"></colgroup><tr  
 valign="baseline" id="TBL-256-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-256-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-257.svg" width="124.52116 " height="58.99886 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-256-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}[near</span><span 
class="cmtt-8">&nbsp;end]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0cm,4em)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(3cm,4em)</span><span 
class="cmtt-8">&nbsp;node{A};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0cm,3em)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node{B}</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(3cm,3em);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0cm,2em)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[midway]</span><span 
class="cmtt-8">&nbsp;{C}</span><span 
class="cmtt-8">&nbsp;(3cm,2em);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0cm,1em)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(3cm,1em)</span><span 
class="cmtt-8">&nbsp;node[midway]</span><span 
class="cmtt-8">&nbsp;{D}</span><span 
class="cmtt-8">&nbsp;;</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
<!--l. 664--><p class="indent">   Like the line-to operation, the curve-to operation <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">..</span></span></span> also allows you to specify nodes &#8220;inside&#8221; the
operation. After both the first <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">..</span></span></span> and also after the second <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">..</span></span></span> you can place node specifications. Like for
the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span> operation, these will be collected and then reinserted after the operation with the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pos</span></span></span> option
set.
<!--l. 671--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.7   </span> <a 
 id="x12-14500011.7"></a>Connecting Nodes</h4>
<!--l. 673--><p class="noindent">Once you have defined a node and given it a name, you can use this name to reference it. This can be done in two
ways, see also Section&nbsp;<a 
href="pgfmanualse8.html#x9-890008.5">8.5<!--tex4ht:ref: section-node-coordinates --></a>. Suppose you have said <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">\path(0,0)</span><span 
class="cmtt-10">&nbsp;node(x)</span><span 
class="cmtt-10">&nbsp;{Hello</span><span 
class="cmtt-10">&nbsp;World!};</span></span></span> in order to define a node
named <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span>.
     <ol type="1" class="enumerate1" >
     <li class="enumerate" value="1" 
><a 
 id="x12-145002x1"></a>Once the node <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span> has been defined, you can use <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x.</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">anchor</span><span 
class="cmsy-10">&gt;</span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">)</span></span></span> wherever you would normally use a
     normal coordinate. This will yield the position at which the given <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">anchor</span><span 
class="cmsy-10">&gt; </span>is in the picture. Note that
     transformations do not apply to this coordinate, that is, <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x.north)</span></span></span> will be the northern anchor of <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span>
     even if you have said <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">scale=3</span></span></span> or <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">xshift=4cm</span></span></span>. This is usually what you would expect.
     </li>
     <li class="enumerate" value="2" 
><a 
 id="x12-145004x2"></a>You can also just use <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x)</span></span></span> as a coordinate. In most cases, this gives the same coordinate as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x.center)</span></span></span>.
     Indeed, if the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">shape</span></span></span> of <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span> is <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span>, then <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x)</span></span></span> and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x.center)</span></span></span> have exactly the same effect.
                                                                                         
                                                                                         
     <!--l. 692--><p class="noindent">However, for most other shapes, some path construction operations like <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span> try to be &#8220;clever&#8221; when
     this they are asked to draw a line from such a coordinate or to such a coordinate. When you say
     <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x)--(1,1)</span></span></span>, the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span> path operation will not draw a line from the center of <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span>, but <span 
class="cmti-10">from the border </span>of <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span>
     in the direction going towards <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(1,1)</span></span></span>. Likewise, <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(1,1)--(x)</span></span></span> will also have the line end on the border
     in the direction coming from <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(1,1)</span></span></span>.
     <!--l. 700--><p class="noindent">In addition to <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">--</span></span></span>, the curve-to path operation <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">..</span></span></span> and the path operations <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">-|</span></span></span> and <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">|-</span></span></span> will also handle nodes
     without anchors correctly. Here is an example, see also Section&nbsp;<a 
href="pgfmanualse8.html#x9-890008.5">8.5<!--tex4ht:ref: section-node-coordinates --></a>:
     <!--l. 704--><p class="noindent"><div class="obeylines-v"></div><object data="pgfmanual-258.svg" width="187.08534 " height="88.31116 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-257-" ><colgroup id="TBL-257-1g"><col 
id="TBL-257-1"></colgroup><tr  
 valign="baseline" id="TBL-257-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-257-1-1"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\path</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(x)</span><span 
class="cmtt-8">&nbsp;{Hello</span><span 
class="cmtt-8">&nbsp;World!}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(3,1)</span><span 
class="cmtt-8">&nbsp;node[circle,draw](y)</span><span 
class="cmtt-8">&nbsp;{$\int_1^2</span><span 
class="cmtt-8">&nbsp;x</span><span 
class="cmtt-8">&nbsp;\mathrm</span><span 
class="cmtt-8">&nbsp;d</span><span 
class="cmtt-8">&nbsp;x$};</span>
<br>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[-&gt;,blue]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(x)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(y);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[-&gt;,red]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(x)</span><span 
class="cmtt-8">&nbsp;-|</span><span 
class="cmtt-8">&nbsp;node[near</span><span 
class="cmtt-8">&nbsp;start,below]</span><span 
class="cmtt-8">&nbsp;{label}</span><span 
class="cmtt-8">&nbsp;(y);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[-&gt;,orange]</span><span 
class="cmtt-8">&nbsp;(x)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;controls</span><span 
class="cmtt-8">&nbsp;+(up:1cm)</span><span 
class="cmtt-8">&nbsp;and</span><span 
class="cmtt-8">&nbsp;+(left:1cm)</span><span 
class="cmtt-8">&nbsp;..</span><span 
class="cmtt-8">&nbsp;node[above,sloped]</span><span 
class="cmtt-8">&nbsp;{label}</span><span 
class="cmtt-8">&nbsp;(y);</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ol>
<!--l. 720--><p class="noindent">
   <h4 class="subsectionHead"><span class="titlemark">11.8   </span> <a 
 id="x12-14600011.8"></a>Predefined Shapes</h4>
<!--l. 723--><p class="noindent"><span 
class="cmcsc-10"><small 
class="small-caps">P</small><small 
class="small-caps">G</small><small 
class="small-caps">F</small></span>&nbsp;and Ti<span 
class="cmti-10">k</span>Z&nbsp;define three shapes, by default:
     <ul class="itemize1">
     <li class="itemize"><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">rectangle</span></span></span>,
     </li>
     <li class="itemize"><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">circle</span></span></span>, and
     </li>
     <li class="itemize"><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span>.</li></ul>
<!--l. 732--><p class="noindent">By loading library packages, you can define more shapes. Currently, the package <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">pgflibraryshapes</span></span></span> defines
     <ul class="itemize1">
     <li class="itemize"><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">ellipse</span></span></span>.</li></ul>
<!--l. 739--><p class="indent">   The exact behaviour of these shapes differs, shapes defined for more special purposes (like a, say, transistor
shape) will have even more custom behaviors. However, there are some options that apply to most
shapes:
     <ul class="itemize1">
     <li class="itemize"><span 
class="cmtt-10">inner sep</span><a 
 id="dx12-146001"></a><a 
 id="dx12-146002"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>An additional (invisible) separation space of <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>will be added inside
     the shape, between the text and the shape&#8217;s background path. The effect is as if you had added
     appropriate horizontal and vertical skips at the beginning and end of the text to make it a bit &#8220;larger.&#8221;
     The default <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">inner</span><span 
class="cmtt-10">&nbsp;sep</span></span></span> is the size of a normal space.
     <!--l. 752--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-258-" ><colgroup id="TBL-258-1g"><col 
id="TBL-258-1"><col 
id="TBL-258-2"></colgroup><tr  
 valign="baseline" id="TBL-258-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-258-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-259.svg" width="50.25822 " height="69.59932 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object> &nbsp; </td> <td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-258-1-2"  
class="td11"> <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[inner</span><span 
class="cmtt-8">&nbsp;sep=0pt,draw]</span><span 
class="cmtt-8">&nbsp;{tight}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0cm,2em)</span><span 
class="cmtt-8">&nbsp;node[inner</span><span 
class="cmtt-8">&nbsp;sep=5pt,draw]</span><span 
class="cmtt-8">&nbsp;{loose}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0cm,4em)</span><span 
class="cmtt-8">&nbsp;node[fill=examplefill]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;{default};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">inner xsep</span><a 
 id="dx12-146003"></a><a 
 id="dx12-146004"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>Specifies the inner separation in the <span 
class="cmmi-10">x</span>-direction, only.
                                                                                         
                                                                                         
     </li>
     <li class="itemize"><span 
class="cmtt-10">inner ysep</span><a 
 id="dx12-146005"></a><a 
 id="dx12-146006"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>Specifies the inner separation in the <span 
class="cmmi-10">y</span>-direction, only.
     </li>
     <li class="itemize"><span 
class="cmtt-10">outer sep</span><a 
 id="dx12-146007"></a><a 
 id="dx12-146008"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>This option adds an additional (invisible) separation space of <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>outside the
     background path. The main effect of this option is that all anchors will move a little &#8220;to the
     outside.&#8221;
     <!--l. 770--><p class="noindent">The default for this option is half the line width. When the default is used and when the background path is
     draw, the anchors will lie exactly on the &#8220;outside border&#8221; of the path (not on the path itself). When the shape
     is filled, but not drawn, this may not be desirable. In this case, the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">outer</span><span 
class="cmtt-10">&nbsp;sep</span></span></span> should be set to zero
     point.
     <!--l. 776--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-259-" ><colgroup id="TBL-259-1g"><col 
id="TBL-259-1"><col 
id="TBL-259-2"></colgroup><tr  
 valign="baseline" id="TBL-259-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-259-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-260.svg" width="122.70642 " height="53.1664 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-259-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[line</span><span 
class="cmtt-8">&nbsp;width=5pt]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[outer</span><span 
class="cmtt-8">&nbsp;sep=0pt,fill=examplefill]</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(f)</span><span 
class="cmtt-8">&nbsp;{filled}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(2,0)</span><span 
class="cmtt-8">&nbsp;node[inner</span><span 
class="cmtt-8">&nbsp;sep=.5\pgflinewidth+2pt,draw]</span><span 
class="cmtt-8">&nbsp;(d)</span><span 
class="cmtt-8">&nbsp;{drawn};</span>
<br>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[-&gt;]</span><span 
class="cmtt-8">&nbsp;(1,-1)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(f);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw[-&gt;]</span><span 
class="cmtt-8">&nbsp;(1,-1)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(d);</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">outer xsep</span><a 
 id="dx12-146009"></a><a 
 id="dx12-146010"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>Specifies the outer separation in the <span 
class="cmmi-10">x</span>-direction, only.
     </li>
     <li class="itemize"><span 
class="cmtt-10">outer ysep</span><a 
 id="dx12-146011"></a><a 
 id="dx12-146012"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>Specifies the outer separation in the <span 
class="cmmi-10">y</span>-direction, only.
     </li>
     <li class="itemize"><span 
class="cmtt-10">minimum height</span><a 
 id="dx12-146013"></a><a 
 id="dx12-146014"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>This option ensures that the height of the shape (including the inner, but
     ignoring the outer separation) will be at least <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt;</span>. Thus, if the text plus the inner separation is not at
     least as large as <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt;</span>, the shape will be enlarged appropriately. However, if the text is already larger
     than <span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt;</span>, the shape will not be shrunk.
     <!--l. 798--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-260-" ><colgroup id="TBL-260-1g"><col 
id="TBL-260-1"><col 
id="TBL-260-2"></colgroup><tr  
 valign="baseline" id="TBL-260-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-260-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-261.svg" width="109.99857 " height="39.47014 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-260-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[minimum</span><span 
class="cmtt-8">&nbsp;height=1cm,draw]</span><span 
class="cmtt-8">&nbsp;{1cm}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(2,0)</span><span 
class="cmtt-8">&nbsp;node[minimum</span><span 
class="cmtt-8">&nbsp;height=0cm,draw]</span><span 
class="cmtt-8">&nbsp;{0cm};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">minimum width</span><a 
 id="dx12-146015"></a><a 
 id="dx12-146016"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>same as <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">minimum</span><span 
class="cmtt-10">&nbsp;height</span></span></span>, only for the width.
     <!--l. 807--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-261-" ><colgroup id="TBL-261-1g"><col 
id="TBL-261-1"><col 
id="TBL-261-2"></colgroup><tr  
 valign="baseline" id="TBL-261-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-261-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-262.svg" width="115.34387 " height="77.40701 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-261-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node[minimum</span><span 
class="cmtt-8">&nbsp;height=2cm,minimum</span><span 
class="cmtt-8">&nbsp;width=3cm,draw]</span><span 
class="cmtt-8">&nbsp;{$3</span><span 
class="cmtt-8">&nbsp;\times</span><span 
class="cmtt-8">&nbsp;2$};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li>
     <li class="itemize"><span 
class="cmtt-10">minimum size</span><a 
 id="dx12-146017"></a><a 
 id="dx12-146018"></a><span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">=</span></span></span><span 
class="cmsy-10">&lt;</span><span 
class="cmti-10">dimension</span><span 
class="cmsy-10">&gt; </span>sets both the minimum height and width at the same time.
                                                                                         
                                                                                         
     <!--l. 814--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular">
<table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-262-" ><colgroup id="TBL-262-1g"><col 
id="TBL-262-1"><col 
id="TBL-262-2"></colgroup><tr  
 valign="baseline" id="TBL-262-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-262-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-263.svg" width="77.40701 " height="153.2807 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-262-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;node[minimum</span><span 
class="cmtt-8">&nbsp;size=2cm,draw]</span><span 
class="cmtt-8">&nbsp;{square};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\draw</span><span 
class="cmtt-8">&nbsp;(0,-2)</span><span 
class="cmtt-8">&nbsp;node[minimum</span><span 
class="cmtt-8">&nbsp;size=2cm,draw,circle]</span><span 
class="cmtt-8">&nbsp;{circle};</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
     </li></ul>
<!--l. 823--><p class="indent">   The <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span> shape is handled in a special way by Ti<span 
class="cmti-10">k</span>Z. When a node <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">x</span></span></span> whose shape is <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">coordinate</span></span></span> is used
as a coordinate <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x)</span></span></span>, this has the same effect as if you had said <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">(x.center)</span></span></span>. None of the special &#8220;line
shortening rules&#8221; apply in this case. This can be useful since, normally, the line shortening causes
paths to be segmented and they cannot be used for filling. Here is an example that demonstrates the
difference:
<!--l. 830--><p class="noindent"><div class="obeylines-v"></div><!--tex4ht:inline--><div class="tabular"><table class="tabular" 
cellspacing="0" cellpadding="0"  
frame="void" id="TBL-263-" ><colgroup id="TBL-263-1g"><col 
id="TBL-263-1"><col 
id="TBL-263-2"></colgroup><tr  
 valign="baseline" id="TBL-263-1-"><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-263-1-1"  
class="td11">  &nbsp;<object data="pgfmanual-264.svg" width="48.35806 " height="100.8194 " type="image/svg+xml"><p>SVG-Viewer needed.</p></object>&nbsp;  </td><td  align="left" style="white-space:nowrap; text-align:left;" id="TBL-263-1-2"  
class="td11">  <table class="minipage"><tr><td><div class="obeylines-v">
<br><span 
class="cmtt-8">\begin{tikzpicture}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\tikzstyle{every</span><span 
class="cmtt-8">&nbsp;node}=[draw]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\path[yshift=1.5cm,shape=rectangle]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;node(a1){}</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;node(a2){}</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;node(a3){}</span><span 
class="cmtt-8">&nbsp;(0,1)</span><span 
class="cmtt-8">&nbsp;node(a4){};</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\filldraw[fill=examplefill]</span><span 
class="cmtt-8">&nbsp;(a1)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(a2)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(a3)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(a4);</span>
<br>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\path[shape=coordinate]</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(0,0)</span><span 
class="cmtt-8">&nbsp;coordinate(b1)</span><span 
class="cmtt-8">&nbsp;(1,0)</span><span 
class="cmtt-8">&nbsp;coordinate(b2)</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;(1,1)</span><span 
class="cmtt-8">&nbsp;coordinate(b3)</span><span 
class="cmtt-8">&nbsp;(0,1)</span><span 
class="cmtt-8">&nbsp;coordinate(b4);</span>
<br><span 
class="cmtt-8">&nbsp;</span><span 
class="cmtt-8">&nbsp;\filldraw[fill=examplefill]</span><span 
class="cmtt-8">&nbsp;(b1)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(b2)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(b3)</span><span 
class="cmtt-8">&nbsp;--</span><span 
class="cmtt-8">&nbsp;(b4);</span>
<br><span 
class="cmtt-8">\end{tikzpicture}</span></div>                                                                                             </td></tr></table> </td>
</tr></table></div>
                                                                                         
                                                                                         
                                                                                         
                                                                                         
                                                                                         
                                                                                         
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