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%!
% PostScript prologue for psn-beta.tex.
% Created 1993/4/16. Source file was psn-beta.doc
% Version 0.93a, 93/03/12.
% For use with Rokicki's dvips.
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307 y(labels.)28 b(Y)-5 b(ou)16 b(specify)f(the)h(name)h(as)e(an)h(ar)o
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(only)f(letters)h(and)g(numbers,)f(and)g(must)g(begin)h(with)591
428 y(a)e(letter)m(.)19 b(Bad)12 b(node)g(names)g(can)g(cause)g(PostScript)g
(errors.)591 527 y(The)f(center)h(of)f(a)h(node)f(is)g(where)g(node)g
(connections)h(point)f(to.)18 b(The)11 b(boundary)591 587 y(is)16
b(for)h(determining)h(where)f(to)g(connect)h(a)f(node)g(connection.)34
b(The)17 b(various)591 647 y(nodes)11 b(dif)o(fer)i(in)f(how)g(they)g
(determine)h(the)g(center)g(and)f(boundary)m(.)17 b(They)c(also)591
707 y(dif)o(fer)f(in)g(what)g(kind)g(of)g(visable)g(object)h(they)f(create.)
591 796 y(Here)f(are)i(the)f(nodes:)591 935 y FA(\\rnode)p
Fz([)p Fy(refpoint)t Fz(])p FA({)p Fx(name)r FA(}{)p Fx(stuf)o(f)6
b FA(})712 1016 y Fu(\\rnode)j FB(puts)g Fr(stuff)16 b FB(in)9
b(a)g(box.)16 b(The)9 b(center)h(of)f(the)g(node)g(is)g Fr(refpoint)t
FB(,)f(which)712 1076 y(you)k(can)h(specify)f(the)g(same)g(way)g(as)g(for)f
Fu(\\rput)p FB(.)591 1177 y FA(\\Rnode)p Fz(*[)p Fy(par)p Fz(])p
FA({)p Fx(name)r FA(}{)p Fx(stuf)o(f)6 b FA(})712 1257 y Fu(\\Rnode)20
b FB(also)f(makes)g(a)h(box,)g(but)f(the)h(center)g(is)e(set)i(dif)o
(ferently)m(.)39 b(If)712 1317 y(you)11 b(align)h Fu(\\rnode)p
FB(')m(s)f(by)g(their)h(baseline,)g(dif)o(ferences)g(in)f(the)h(height)g(and)
712 1377 y(depth)20 b(of)e(the)i(nodes)e(can)i(cause)f(connecting)h(lines)f
(to)g(be)g(not)g(quite)712 1438 y(parallel,)14 b(such)d(as)h(in)g(the)h
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b Fu(\\Rnode)p FB(,)g(the)f(center)h(is)f(determined)h(relative)g(to)f(the)h
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1889 a Fs(\\Large)712 1949 y(\\Rnode{A}{sp})22 b(\\hskip)h(2cm)g
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b(ou)11 b(can)g(usually)g(get)g(by)f(without)h(\256ddling)g(with)f(the)h
(center)h(the)f(center)712 2198 y(of)h(the)h(node,)f(but)g(to)g(modify)g(it)g
(you)g(set)g(the)820 2298 y FA(href=)p Fx(num)657 b Fv(Default:)20
b FA(0)820 2359 y(vref=)p Fx(dim)608 b Fv(Default:)19 b FA(.7ex)712
2459 y FB(parameters.)46 b(In)21 b(the)h(horizontal)g(direction,)i(the)e
(center)g(is)f(located)712 2520 y(fraction)f Fu(href)e FB(from)h(the)g
(center)h(to)f(the)g(edge.)39 b(E.g,)20 b(if)f Fu(href=-1)p
FB(,)g(the)712 2580 y(center)f(is)g(on)f(the)g(left)h(edge)f(of)g(the)h(box.)
33 b(In)17 b(the)g(vertical)i(direction,)712 2640 y(the)f(center)h(is)e
(located)h(distance)g Fu(vref)f FB(from)g(the)h(baseline.)34
b(The)18 b Fu(vref)591 2828 y Fp(Nodes)1228 b(7)p eop
%%Page: 8 8
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Fu(\\Rnode)g FB(is)f(used,)g(so)f(that)i(you)f(can)712 110
y(use)17 b Fs(ex)g FB(units)f(to)h(have)g(the)g(distance)g(adjust)g(itself)g
(to)g(the)g(size)g(of)f(the)712 170 y(current)c(font)f(\(but)f(without)h
(being)h(sensitive)f(to)g(dif)o(ferences)g(in)g(the)g(size)712
230 y(of)h(letters)h(within)f(the)h(current)f(font\).)591 332
y FA(\\pnode)p Fz(\()p Fy(x)t Fz(,)t Fy(y)t Fz(\))p FA({)p
Fx(name)r FA(})712 413 y FB(This)g(creates)h(a)f(zero)h(dimensional)f(node)g
(at)h Fs(\()p Fr(x)s Fs(,)t Fr(y)t Fs(\))p FB(.)591 515 y FA(\\cnode)p
Fz(*[)p Fy(par)p Fz(]\()p Fy(x)t Fz(,)t Fy(y)t Fz(\))p FA({)p
Fx(radius)r FA(}{)p Fx(name)r FA(})712 596 y FB(This)f(draws)f(a)h(circle.)18
b(Here)11 b(is)h(an)g(example)g(with)g Fu(\\pnode)f FB(and)h
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y FA(\\Cnode)p Fz(*[)p Fy(par)p Fz(]\()p Fy(x)t Fz(,)t Fy(y)t
Fz(\))p FA({)p Fx(name)r FA(})712 1035 y FB(This)g(is)g(like)h
Fu(\\cnode)p FB(,)f(but)g(the)g(radius)g(is)g(the)g(value)h(of)820
1137 y FA(radius=)p Fx(dim)571 b Fv(Default:)20 b FA(2pt)712
1238 y FB(This)11 b(is)g(convenient)h(when)f(you)f(want)h(many)h(circle)g
(nodes)e(of)h(the)h(same)712 1298 y(radius.)591 1400 y FA(\\circlenode)p
Fz(*[)p Fy(par)p Fz(])p FA({)p Fx(name)r FA(}{)p Fx(stuf)o(f)6
b FA(})712 1481 y FB(This)14 b(is)e(a)i(variant)f(of)g Fu(\\pscirclebox)g
FB(that)g(gives)g(the)h(node)f(the)g(shape)g(of)712 1541 y(the)g(circle.)591
1643 y FA(\\cnodeput)p Fz(*[)p Fy(par)p Fz(]{)p Fy(angle)q
Fz(}\()p Fy(x)t Fz(,)t Fy(y)t Fz(\))p FA({)p Fx(name)r FA(}{)p
Fx(stuf)o(f)6 b FA(})712 1724 y FB(This)19 b(is)f(a)h(variant)g(of)f
Fu(\\cput)g FB(that)h(gives)f(the)h(node)f(the)h(shape)f(of)g(the)712
1784 y(circle.)h(That)13 b(is,)e(it)i(is)f(like)820 1886 y
Fs(\\rput{)p Fr(angle)q Fs(}\()p Fr(x)s Fs(,)p Fr(y)t Fs(\){\\circlenode{)p
Fr(na)o(me)q Fs(}{)o Fr(stuff)6 b Fs(})591 1988 y FA(\\ovalnode)p
Fz(*[)p Fy(par)p Fz(])p FA({)p Fx(name)r FA(}{)p Fx(stuf)o(f)g
FA(})712 2069 y FB(This)11 b(is)f(a)h(variant)g(of)f Fu(\\psovalbox)g
FB(that)i(gives)e(the)h(node)f(the)h(shape)f(of)h(an)712 2129
y(ellipse.)19 b(Here)11 b(is)h(an)g(example)h(with)f Fu(\\circlenode)g
FB(and)g Fu(\\ovalnode)p FB(:)186 2299 y
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def false pop end /AngleA 90. def /AngleB 90. def /armA 10.0 def /armB
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2483 y FA(\\dianode)p Fz(*[)p Fy(par)p Fz(])p FA({)p Fx(name)r
FA(}{)p Fx(stuf)o(f)6 b FA(})712 2564 y FB(This)12 b(is)g(like)h
Fu(\\diabox)p FB(.)591 2828 y Fp(Nodes)1228 b(8)p eop
%%Page: 9 9
8 bop 591 50 a FA(\\trinode)p Fz(*[)p Fy(par)p Fz(])p FA({)p
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b(is)g(like)h Fu(\\tribox)p FB(.)229 270 y
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CM def T rotate /h ED /w ED dup 0 eq { pop } { CLW mul neg /d ED /a
w h Atan def /h d a sin Div h add def /w d a cos Div w add def } ifelse
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{ moveto } def /ArrowB { } def false Line closepath mtrx setmatrix
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def false pop .5 88.25082 34.13666 exch 3 -90 mul 42.42679 2.64673
/mtrx CM def translate rotate /h ED 2 div /w ED dup 0 eq { pop } {
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0 d /ArrowA { moveto } def /ArrowB { } def false Line closepath mtrx
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446 y(\\nccurve[angleA=-135,angleB=90]{A}{B})591 677 y FA(\\dotnode)p
Fz(*[)p Fy(par)p Fz(]\()p Fy(x)t Fz(,)t Fy(y)t Fz(\))p FA({)p
Fx(name)r FA(})712 757 y FB(This)f(is)g(a)h(variant)f(of)g
Fu(\\psdot)p FB(.)17 b(For)11 b(example:)236 1061 y
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Fz(*[)p Fy(par)p Fz(]\()p Fy(x)t Fz(,)t Fy(y)t Fz(\))p FA({)p
Fx(name)r FA(})712 1255 y FB(The)15 b Fs(f)g FB(stands)f(for)g
(\252frame\272.)26 b(This)15 b(is)f(like,)i(but)e(easier)h(than,)h(putting)f
(a)712 1315 y Fu(\\psframe)d FB(in)g(an)g Fu(\\rnode)p FB(.)236
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sub /y1 ED x2 sub /x1 ED y2 add /y2 ED x2 add /x2 ED 0. true 1 index
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setgray 0 setlinecap stroke  grestore  grestore end
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1511 y(\\fnode*[framesize=1)23 b(5pt]\(2,2\){B})712 1571 y
(\\ncline[nodesep=3pt]{A}{B})712 1732 y FB(There)13 b(are)f(two)g(dif)o
(ferences)h(between)f Fu(\\fnode)f FB(and)h Fu(\\psframe)p
FB(:)772 1832 y Fj(\267)26 b FB(There)12 b(is)g(a)g(single)g(\(optional\))h
(coordinate)g(ar)o(gument,)f(that)h(gives)820 1892 y(the)f
Ft(center)h FB(of)e(the)i(frame.)772 1970 y Fj(\267)26 b FB(The)12
b(width)g(and)g(height)h(of)e(the)i(frame)f(are)h(set)f(by)f(the)911
2049 y FA(framesize=)p Fx(dim1)i(`dim2')191 b Fv(Default:)20
b FA(10pt)820 2128 y FB(parameter)m(.)f(If)11 b(you)h(omit)h
Fr(dim2)s FB(,)e(you)g(get)i(a)f(square)g(frame.)366 2322 y
FC(7)70 b(Node)21 b(connections)591 2442 y FB(All)11 b(the)g(node)h
(connection)g(commands)f(begin)g(with)h Fs(nc)p FB(,)f(and)g(they)h(all)g
(have)f(the)591 2503 y(same)h(syntax:)839 2484 y Fi(1)p 591
2545 544 2 v 646 2575 a Fh(1)662 2590 y Fg(The)h(node)f(connections)e(can)i
(be)g(used)g(with)g Ff(\\pscustom)p Fg(.)22 b(The)13 b(beginning)f(of)g(the)g
(node)591 2640 y(connection)c(is)i(attached)f(to)h(the)f(current)h(point)g
(by)g(a)f(straight)h(line,)g(as)f(with)h Ff(\\psarc)p Fg(.)1790
2625 y Fh(2)591 2828 y Fp(Node)f(connections)1037 b(9)p eop
%%Page: 10 10
9 bop 712 50 a Fs(\\)p Fr(nodeconnection)q Fs([)p Fr(par)t
Fs(]{)p Fr(arrows)q Fs(}{)p Fr(nod)o(eA)p Fs(}{)p Fr(n)o(ode)o(B)r
Fs(})591 158 y FB(A)14 b(line)h(of)g(some)g(sort)g(is)f(drawn)h(from)f
Fr(nodeA)g FB(to)h Fr(nodeB)r FB(.)f(Some)h(of)g(the)g(node)591
218 y(connection)10 b(commands)h(are)f(a)g(little)i(confusing,)e(but)g(with)g
(a)g(little)i(experimen-)591 279 y(tation)k(you)g(will)g(\256gure)f(them)i
(out,)g(and)f(you)f(will)h(be)g(amazed)h(at)g(the)f(things)591
339 y(you)10 b(can)g(do.)17 b(When)10 b(we)h(refer)f(to)h(the)g
Fs(A)f FB(and)h Fs(B)f FB(nodes)g(below)m(,)h(we)f(are)h(referring)591
399 y(only)f(to)h(the)g(order)g(in)g(which)g(the)g(names)g(are)g(given)g(as)g
(ar)o(guments)g(to)g(the)g(node)591 459 y(connection)h(macros.)962
441 y Fi(3)591 545 y FB(The)h(node)g(connections)g(use)g(many)g(of)g(the)g
(usual)g(graphics)g(parameters,)h(plus)591 605 y(a)k(few)g(special)h(ones.)37
b(Let')m(s)19 b(start)f(with)h(one)f(that)h(applies)g(to)g(all)g(the)g(node)
591 666 y(connections:)712 774 y FA(nodesep=)p Fx(dim)625 b
Fv(Default:)20 b FA(0pt)591 882 y Fu(nodesep)10 b FB(is)h(the)h(border)g
(around)f(the)h(nodes)f(that)h(is)f(added)h(for)f(the)h(purpose)f(of)591
943 y(determining)i(where)e(to)i(connect)f(the)h(lines.)591
1029 y(For)j(this)i(and)f(other)h(node)g(connection)g(parameters,)h(you)f
(can)f(set)h(dif)o(ferent)591 1089 y(values)i(for)f(the)h(two)g(ends)f(of)h
(the)g(node)g(connection.)41 b(Set)20 b(the)h(parameter)591
1149 y Fu(nodesepA)11 b FB(for)h(the)g(\256rst)f(node,)h(and)g(set)g
Fu(nodesepB)g FB(for)g(the)g(second)g(node.)591 1235 y(The)i(\256rst)f(two)g
(node)h(connections)h(draw)e(a)h(line)g(or)g(arc)g(directly)h(between)f(the)
591 1295 y(two)d(nodes:)591 1404 y FA(\\ncline)p Fz(*[)p Fy(par)p
Fz(]{)p Fy(arrows)q Fz(})p FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r
FA(})712 1481 y FB(This)h(draws)g(a)g(straight)g(line)h(between)f(the)h
(nodes.)j(For)c(example:)118 1889 y
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end
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FB(Idea)h(2)118 1890 y
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false 0.4 1.4 1.5 2. Arrow  EndArrow  moveto } def /ArrowB { BeginArrow
false 0.4 1.4 1.5 2. Arrow  EndArrow  } def /NCLW CLW def tx@NodeDict
begin 0.0 0.0 neg 3.0 3.0 /TheNodeA /TheNodeB InitNC { NCLine  } if
end gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore  grestore
end
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b(1}})712 1723 y(\\rput[tr]\(4,3\){\\rnode{B}{Idea)g(2}})712
1784 y(\\ncline[nodesep=3pt]{<->}{A}{B})591 1990 y FA(\\ncarc)p
Fz(*[)p Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p FA({)p Fx(nodeA)p
FA(}{)p Fx(nodeB)r FA(})712 2068 y FB(This)12 b(connects)h(the)f(two)g(nodes)
f(with)h(an)g(arc.)160 2424 y
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copy 0.0 sub 4 2 roll Pyth 3.0 add 0.8 add tx@NodeDict begin /TheNodeA
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end

@endspecial
FB(X)514 2188 y
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copy 0.0 sub 4 2 roll Pyth 3.0 add 0.8 add tx@NodeDict begin /TheNodeB
11 NewNode InitCnode  end end grestore end
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0.0 add 2 div 2 copy 0.0 sub 4 2 roll Pyth 3.0 add CLW 2 div add 0
360 arc closepath gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore
end

@endspecial FB(Y)177
2408 y
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} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0 3.0 /TheNodeA /TheNodeB
InitNC { yB yA sub xB xA sub Atan dup 8.  add /AngleA ED 8.  sub 180
add /AngleB ED 0.67  0.67  NCCurve  } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end
 177 2408 a
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} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0 3.0 /TheNodeB /TheNodeA
InitNC { yB yA sub xB xA sub Atan dup 8.  add /AngleA ED 8.  sub 180
add /AngleB ED 0.67  0.67  NCCurve  } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end
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2240 y(\\cnodeput\(3,2\){B}{Y})712 2300 y(\\psset{nodesep=3pt})712
2361 y(\\ncarc{->}{A}{B})712 2421 y(\\ncarc{->}{B}{A})p 591
2495 544 2 v 646 2525 a Fh(3)662 2540 y Fg(When)h(a)h(node)f(name)g(cannot)g
(be)h(found)f(on)h(the)f(same)g(page)g(as)g(the)h(node)f(connection)591
2590 y(command,)6 b(you)h(get)g(either)g(no)g(node)f(conne)o(ction)h(or)f(a)h
(no)o(nsens)o(e)f(node)g(conne)o(ction.)k(However)n(,)591 2640
y(T)608 2649 y(E)628 2640 y(X)f(will)h(not)g(report)g(any)g(errors.)591
2828 y Fp(Node)f(connections)1016 b(10)p eop
%%Page: 11 11
10 bop 712 50 a FB(The)12 b(angle)f(between)h(the)f(arc)h(and)f(the)g(line)h
(between)f(the)h(two)e(nodes)h(is)1931 32 y Fi(4)820 152 y
FA(arcangle=)p Fx(angle)524 b Fv(Default:)20 b FA(8)591 282
y Fu(\\ncline)13 b FB(and)h Fu(\\ncarc)e FB(both)i(determine)g(the)g(angle)g
(at)g(which)f(the)h(node)f(connec-)591 342 y(tions)d(join)i(by)e(the)i
(relative)g(position)f(of)g(the)g(two)g(nodes.)16 b(W)n(ith)c(the)f(next)g
(group)591 403 y(of)i(node)h(connections,)g(you)g(specify)f(one)h(or)f(both)h
(of)g(the)g(angles)g(in)f(absolute)591 463 y(terms,)f(by)f(setting)i(the)712
594 y FA(angle=)p Fx(angle)705 b Fv(Default:)20 b FA(0)591
724 y FB(\(and)11 b Fu(angleA)i FB(and)f Fu(angleB)p FB(\))g(parameter)m(.)
591 814 y(Y)-5 b(ou)11 b(also)g(specify)h(the)g(length)g(of)f(the)h(line)h
(segment)f(where)f(the)h(node)f(connec-)591 874 y(tion)h(joins)g(at)g(one)g
(or)g(both)g(of)g(the)g(ends)g(\(the)g(\252arms\272\))h(by)e(setting)i(the)
712 1005 y FA(arm=)p Fx(dim)709 b Fv(Default:)20 b FA(10pt)591
1135 y FB(\(and)11 b Fu(armA)i FB(and)f Fu(armB)p FB(\))g(parameter)m(.)591
1225 y(These)i(node)f(connections)h(all)h(consist)f(of)f(several)h(line)h
(segments,)f(including)591 1285 y(the)e(arms.)17 b(The)12 b(value)h(of)f
Fu(linearc)f FB(is)h(used)g(for)g(rounding)f(the)i(corners.)591
1374 y(Here)e(they)i(are,)f(starting)g(with)g(the)h(simplest)f(one:)591
1517 y FA(\\ncdiag)p Fz(*[)p Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p
FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r FA(})712 1598 y FB(An)18
b(arm)g(is)f(drawn)h(at)g(each)g(node,)h(joining)g(at)f(angle)g
Fu(angleA)g FB(or)g Fu(an-)712 1658 y(gleB)p FB(,)13 b(and)g(with)f(a)h
(length)g(of)f Fu(armA)h FB(or)f Fu(armB)p FB(.)h(Then)f(the)h(two)f(arms)g
(are)712 1719 y(connected)i(by)f(a)g(straight)g(line,)h(so)e(that)i(the)f
(whole)g(line)g(has)g(three)g(line)712 1779 y(segments.)18
b(For)11 b(example:)118 1904 y
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end
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@endspecial FB(Node)g(A)397 2187 y
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/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
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0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end


@endspecial FB(Node)g(B)118 2210 y
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} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /r 5.69046 def /Lineto
{ Arcto } def false pop end /AngleA -90. def /AngleB 90. def /armA
14.22636 def /armB 14.22636 def NCDiag  } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end
 712 1983 a Fs
(\\rput[tl]\(0,3\){\\rnode{A}{\\psframebox{Node)20 b(A}}})712
2043 y(\\rput[br]\(4,0\){\\ovalnode{B}{Node)f(B}})712 2103
y(\\ncdiag[angleA=-90,)j(angleB=90,)f(arm=.5,)h(linearc=.2]{A}{B})p
591 2244 544 2 v 646 2274 a Fh(4)662 2290 y Fg(Rather)13 b(than)g(using)g(a)g
(true)g(arc,)h Ff(\\ncarc)g Fg(actually)e(draws)h(a)g(bezier)f(curve.)24
b(When)13 b(con-)591 2339 y(necting)j(two)i(circular)f(nodes)g(using)g(the)g
(default)g(parameter)g(values,)h(the)g(curve)f(will)g(be)591
2389 y(indistinguishable)10 b(from)i(a)g(true)g(arc.)20 b(However)n(,)12
b Ff(\\ncarc)g Fg(is)g(more)f(\257exible)h(than)g(an)f(arc,)h(and)591
2439 y(works)g(right)h(connecting)f(nodes)h(of)g(dif)o(ferent)g(shapes)f(and)
g(sizes.)23 b(Y)l(ou)12 b(can)h(set)f Ff(arcangleA)591 2489
y Fg(and)c Ff(arcangleB)g Fg(separately)m(,)f(and)i(you)f(can)g(control)g
(the)g(curvature)g(with)h(the)f Ff(ncurv)g Fg(parameter)n(,)591
2539 y(which)h(is)g(described)g(on)h(page)f Fe(??)p Fg(.)591
2828 y Fp(Node)g(connections)1019 b(1)m(1)p eop
%%Page: 12 12
11 bop 712 50 a FB(Y)-5 b(ou)10 b(can)f(also)h(set)g(one)f(or)h(both)f(of)g
(the)h(arms)g(to)g(zero)f(length.)17 b(For)9 b(exam-)712 110
y(ple,)14 b(if)g(you)f(set)g Fu(arm=0)p FB(,)g(the)h(nodes)f(are)h(connected)
g(by)f(a)g(straight)h(line,)712 170 y(but)8 b(you)g(get)g(to)g(determine)g
(where)g(the)g(line)g(connects)g(\(whereas)g(the)g(con-)712
230 y(nection)15 b(point)g(is)f(determined)i(automatically)g(by)e
Fu(\\ncline)p FB(\).)25 b(Compare)712 291 y(this)13 b(use)e(of)h
Fu(\\ncdiag)g FB(with)g Fu(\\ncline)g FB(in)g(the)h(following)f(example:)463
560 y
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/X 11.20326 def /Y 3.84193 def /w 19.64143 def /h 9.37096 def /NodePos
{ OvalNodePos } def end end grestore end
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0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end

@endspecial FB(Root)202 443
y
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copy 0.0 sub 4 2 roll Pyth 3.0 add 0.8 add tx@NodeDict begin /TheNodeA
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end

@endspecial FB(XX)202 679 y
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copy 0.0 sub 4 2 roll Pyth 3.0 add 0.8 add tx@NodeDict begin /TheNodeB
11 NewNode InitCnode  end end grestore end
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@setspecial
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360 arc closepath gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore
end

@endspecial FB(YY)118 663 y
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false 0.4 1.4 1.5 2. Arrow  EndArrow  moveto } def /ArrowB { } def
/NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0 0.0 /TheNodeA /TheNodeR
InitNC { tx@Dict begin /Lineto /lineto load def false pop end /AngleA
0. def /AngleB 180. def /armA 0.0 def /armB 0.0 def NCDiag  } if end
gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore  grestore end
 118 663 a
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false 0.4 1.4 1.5 2. Arrow  EndArrow  moveto } def /ArrowB { } def
/NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0 0.0 /TheNodeB /TheNodeR
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 0 setlinecap stroke
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 712 435
a Fs(\\rput[r]\(4,1\){\\ovalnode{R}{Root}})712 495 y
(\\cnodeput\(1,2\){A}{XX})712 555 y(\\cnodeput\(1,0\){B}{YY})712
615 y(\\ncdiag[angleB=180,)22 b(arm=0]{<-}{A}{R})712 675 y
(\\ncline{<-}{B}{R})712 844 y FB(\(Note)12 b(that)h(in)f(this)g(example,)h
(the)g(default)f(value)h Fu(angleA=0)f FB(is)f(used.\))591
946 y FA(\\ncdiagg)p Fz(*[)p Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p
FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r FA(})712 1027 y Fu(\\ncdiagg)18
b FB(is)g(similar)h(to)f Fu(\\ncdiag)p FB(,)i(but)e(only)g(the)g(arm)h(for)e
(node)h(A)g(is)712 1087 y(drawn.)f(The)c(end)f(of)g(this)g(arm)g(is)g(then)h
(connected)g(directly)g(to)f(node)g(B.)712 1147 y(Compare)h
Fu(\\ncdiagg)f FB(with)g Fu(\\ncdiag)g FB(when)f Fu(armB=0)p
FB(:)177 1364 y @beginspecial @setspecial
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@endspecial 177
1364 a
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11 NewNode InitCnode  end end grestore end
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 FB(H)531 1498 y
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begin /TheNodec 16 NewNode InitRnode  end end grestore end
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} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0
0.0 /TheNodeb /TheNodea InitNC { tx@Dict begin /Lineto /lineto load
def false pop end /AngleA 180. def /AngleB 0. def /armA 42.67911 def
/armB 10.0 def NCDiagg  } if end gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 177 1364
a
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2.15988 NAngle 90 sub  /a ED add 2 div /h ED 2 div /w ED /s a sin def
/c a cos def /b s abs c abs 2 copy gt dup /q ED { pop } { exch pop
} ifelse def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs
w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop
add a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 100 1374 a Fs(\\ncdiagg)177 1364 y
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 177 1364 a
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177 1364 a
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} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0
0.0 /TheNodec /TheNodea InitNC { tx@Dict begin /Lineto /lineto load
def false pop end /AngleA 180. def /AngleB 0. def /armA 42.67911 def
/armB 0.0 def NCDiag  } if end gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 177 1364 a
 tx@Dict begin tx@NodeDict begin /t 1.2 def LPut end PutBegin  end
 177 1364 a
 tx@Dict begin { 5.0 tx@Dict /NCLW known { NCLW add } if 31.72441 7.21277
2.15988 NAngle 90 add  /a ED add 2 div /h ED 2 div /w ED /s a sin def
/c a cos def /b s abs c abs 2 copy gt dup /q ED { pop } { exch pop
} ifelse def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs
w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop
add a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 111 1374 a Fs(\\ncdiag)177
1364 y
 tx@Dict begin PutEnd  end
 177 1364 a
 tx@Dict begin PutEnd  end
 712 1254 a Fs(\\cnode\(0,0\){12pt}{a})712
1314 y(\\rput[l]\(3,1\){\\rnode{b}{H}})712 1374 y
(\\rput[l]\(3,-1\){\\rnode{c}{T}})712 1434 y(\\ncdiagg[angleA=180,)21
b(armA=1.5,)i(nodesepA=3pt]{b}{a})712 1495 y(\\ncdiag[angleA=180,)f
(armA=1.5,)g(armB=0,)g(nodesepA=3pt]{c}{a})712 1626 y FB(Y)-5
b(ou)10 b(can)h(use)f Fu(\\ncdiagg)g FB(with)g Fu(armA=0)g
FB(if)h(you)f(want)g(a)g(straight)h(line)g(that)712 1686 y(joins)f(to)h(node)
e(A)h(at)g(the)h(angle)f(you)g(specify)m(,)g(and)g(to)g(node)g(B)g(at)g(an)g
(angle)712 1746 y(that)j(is)f(determined)h(automatically)m(.)591
1848 y FA(\\ncbar)p Fz(*[)p Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p
FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r FA(})712 1929 y FB(This)24
b(node)g(connection)h(consists)e(of)g(a)h(line)h(with)e(arms)h(dropping)712
1989 y(\252down\272,)17 b(at)e(right)h(angles,)h(to)e(meet)i(two)e(nodes)g
(at)h(an)g(angle)g Fu(angleA)p FB(.)712 2049 y(Each)11 b(arm)g(is)f(at)h
(least)g(of)f(length)h Fu(armA)g FB(or)f Fu(armB)p FB(,)h(but)f(one)g(may)h
(be)g(need)712 2110 y(to)i(be)f(longer)m(.)156 2282 y
 tx@Dict begin gsave STV CP T 7.7818 0.15552 38.39641 19.1982 3.81314
 tx@NodeDict begin /TheNodeA 16 NewNode InitRnode  end end grestore
end
 FB(Connect)h(some)440
2282 y
 tx@Dict begin gsave STV CP T 7.7818 0.15552 28.15506 14.07753 3.81314
 tx@NodeDict begin /TheNodeB 16 NewNode InitRnode  end end grestore
end
 FB(words)o(!)591 2282 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { BeginArrow
false 0.4 1.4 1.5 2. Arrow  EndArrow  moveto } def /ArrowB { BeginArrow
{false} true /DS 2.0 2. CLW mul add 2 div def EndDot  EndArrow  } def
/NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0 3.0 /TheNodeA /TheNodeB
InitNC { tx@Dict begin /Lineto /lineto load def false pop end /AngleA
-90. def /AngleB -90. def /armA 10.0 def /armB 10.0 def /AngleB -90.
def NCBar  } if end gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore
 grestore end
 591 2282 a
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0
3.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /Lineto /lineto load
def false pop end /AngleA 70. def /AngleB 70. def /armA 10.0 def /armB
10.0 def /AngleB 70. def NCBar  } if end gsave 0.8 SLW 0. setgray 0
setlinecap stroke  grestore  grestore end
 712 2216 a Fs(\\rnode{A}{Connect})
21 b(some)i(\\rnode{B}{words}!)712 2276 y(\\ncbar[nodesep=3pt,angle=-90]{<-)o
(**}{)o(A}{B})712 2337 y(\\ncbar[nodesep=3pt,angle=70]{A}{B})712
2468 y FB(Generally)m(,)13 b(the)f(whole)g(line)h(has)e(three)i(straight)f
(segments.)591 2828 y Fp(Node)d(connections)1016 b(12)p eop
%%Page: 13 13
12 bop 591 50 a FA(\\ncangle)p Fz(*[)p Fy(par)p Fz(]{)p Fy(arrows)q
Fz(})p FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r FA(})712 131 y
FB(Now)16 b(we)f(get)i(to)f(a)g(more)h(complicated)h(node)e(connection.)30
b Fu(\\ncangle)712 191 y FB(typically)10 b(draws)d(three)i(line)g(segments,)f
(like)h Fu(\\ncdiag)p FB(.)16 b(However)n(,)8 b(rather)712
251 y(than)14 b(\256xing)e(the)i(length)f(of)g(arm)g(A,)f(we)h(adjust)g(arm)g
(A)g(so)f(that)i(the)f(line)712 311 y(joining)g(the)f(two)g(arms)g(meets)g
(arm)h(A)e(at)i(a)f(right)g(angle.)18 b(For)11 b(example:)118
436 y
 tx@Dict begin gsave STV CP T 11.5818 3.95552 43.75 21.875 3.81314
 tx@NodeDict begin /TheNodeA 16 NewNode InitRnode  end end grestore
end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 3.95552
neg 39.95 11.5818 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke
 grestore end

@endspecial FB(Node)g(A)397
719 y
 tx@Dict begin gsave STV CP T  tx@NodeDict begin /TheNodeB 14 NewNode
/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0 360 28.91011 CLW 2
div sub 9.41168 CLW 2 div sub 17.7582 3.81314 /mtrx CM def T scale
0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end

@endspecial FB(Node)g(B)118
742 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /Lineto /lineto load
def false pop end /AngleA -90. def /AngleB 90. def /armA 10.0 def /armB
28.45274 def NCAngle  } if end gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 712 516 a Fs(\\rput[tl]\(0,3\){\\rnode{A}{\\psframebox{Node)20
b(A}}})712 576 y(\\rput[br]\(4,0\){\\ovalnode{B}{Node)f(B}})712
636 y(\\ncangle[angleA=-90,angleB=90,armB=1cm]{A}{B})712 865
y FB(Now)11 b(watch)i(what)e(happens)h(when)g(we)f(change)i
Fu(angleA)p FB(:)118 990 y
 tx@Dict begin gsave STV CP T 11.5818 3.95552 43.75 21.875 3.81314
 tx@NodeDict begin /TheNodeA 16 NewNode InitRnode  end end grestore
end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 3.95552
neg 39.95 11.5818 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke
 grestore end

@endspecial
FB(Node)e(A)118 1296 y
 tx@Dict begin { tx@NodeDict begin tx@NodeDict /TheNodeA known { 0.0
-70. 0.0 /TheNodeA load GetEdge } { CP } ifelse end } PutCoor PutBegin
 end
 118 1296 a
 tx@Dict begin { 0.0 0.0 0.0 0.0 -70.  /a ED add 2 div /h ED 2 div
/w ED /s a sin def /c a cos def /b s abs c abs 2 copy gt dup /q ED
{ pop } { exch pop } ifelse def /w1 c b div w mul def /h1 s b div h
mul def q { w1 abs w sub dup c mul abs } { h1 abs h sub dup s mul abs
} ifelse /z ED abs /y ED /x ED q { x s div c mul abs y gt } { x c div
s mul abs y gt } ifelse { x x mul y y mul sub z z mul add sqrt z add
} { q { x s div } { x c div } ifelse abs } ifelse a PtoC h1 add exch
w1 add exch } PutCoor PutBegin  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  /ArrowA { moveto } def
/ArrowB { } def 0.0 0.0 /y ED /x ED /r 11.38092 def /c 57.2957 r Div
def /angleA 0. 0.0 c mul 2 div sub def /angleB -70. 0.0 c mul 2 div
add def x y r angleA angleB arcn  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end


@endspecial 118 1296 a
 tx@Dict begin { 11.38092 30.63216 7.21277 2.15988 -35.  /a ED add
2 div /h ED 2 div /w ED /s a sin def /c a cos def /b s abs c abs 2
copy gt dup /q ED { pop } { exch pop } ifelse def /w1 c b div w mul
def /h1 s b div h mul def q { w1 abs w sub dup c mul abs } { h1 abs
h sub dup s mul abs } ifelse /z ED abs /y ED /x ED q { x s div c mul
abs y gt } { x c div s mul abs y gt } ifelse { x x mul y y mul sub
z z mul add sqrt z add } { q { x s div } { x c div } ifelse abs } ifelse
a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 55 1306 a Fs(angleA)118 1296 y
 tx@Dict begin PutEnd  end
 118
1296 a
 tx@Dict begin PutEnd  end
 118 1296 a
 tx@Dict begin PutEnd  end
 397 1273 a
 tx@Dict begin gsave STV CP T  tx@NodeDict begin /TheNodeB 14 NewNode
/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0 360 28.91011 CLW 2
div sub 9.41168 CLW 2 div sub 17.7582 3.81314 /mtrx CM def T scale
0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end

@endspecial
FB(Node)g(B)118 1296 y
 tx@Dict begin gsave STV newpath 1.2 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /Lineto /lineto load
def false pop end /AngleA -70. def /AngleB 90. def /armA 10.0 def /armB
28.45274 def NCAngle  } if end gsave 1.2 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 118 1296 a
 tx@Dict begin { tx@NodeDict begin tx@NodeDict /TheNodeB known { 0.0
90. 0.0 /TheNodeB load GetEdge } { CP } ifelse end } PutCoor PutBegin
 end
 118 1296 a
 tx@Dict begin { 0.0 0.0 0.0 0.0 90.  /a ED add 2 div /h ED 2 div /w
ED /s a sin def /c a cos def /b s abs c abs 2 copy gt dup /q ED { pop
} { exch pop } ifelse def /w1 c b div w mul def /h1 s b div h mul def
q { w1 abs w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse
/z ED abs /y ED /x ED q { x s div c mul abs y gt } { x c div s mul
abs y gt } ifelse { x x mul y y mul sub z z mul add sqrt z add } {
q { x s div } { x c div } ifelse abs } ifelse a PtoC h1 add exch w1
add exch } PutCoor PutBegin  end
 126 1270 a
 tx@Dict begin CP CP translate 1.54375 2.79187 scale NET  end
 FB(})126
1270 y
 tx@Dict begin CP CP translate 1 1.54375 div 1 2.79187 div scale NET
 end
 166 1250 a Fs(armB)118 1296 y
 tx@Dict begin PutEnd  end
 118 1296 a
 tx@Dict begin PutEnd  end
 118 1296 a
 tx@Dict begin tx@NodeDict begin /t 1. def LPut end PutBegin  end

118 1296 a
 tx@Dict begin NAngle  tx@Dict /TMatrix known not { /TMatrix { } def
/RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED a Rot
/RAngle [ RAngle dup a add ] cvx def  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 0.0 0.0 9.95863
9.95863 0 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore
end

@endspecial 118 1296
a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 118 1296 a
 tx@Dict begin PutEnd  end
 712 1069 a Fs(\\rput[tl]\(0,3\){\\rnode{A}{\\psframebox{Node)20
b(A}}})712 1129 y(\\rput[br]\(4,0\){\\ovalnode{B}{Node)f(B}})712
1189 y(\\ncangle[angleA=-70,angleB=90,armB=1cm,linewidth=1.2pt]{A}{B})712
1418 y Fu(\\ncangle)14 b FB(is)g(also)g(a)g(good)g(way)f(to)i(join)f(nodes)g
(by)f(a)h(right)h(angle,)g(with)712 1479 y(just)e(two)e(line)i(segments,)f
(as)g(in)g(this)g(example:)118 1603 y
 tx@Dict begin gsave STV CP T 11.5818 3.95552 43.75 21.875 3.81314
 tx@NodeDict begin /TheNodeA 16 NewNode InitRnode  end end grestore
end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 3.95552
neg 39.95 11.5818 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke
 grestore end


@endspecial FB(Node)f(A)397 1768 y
 tx@Dict begin gsave STV CP T  tx@NodeDict begin /TheNodeB 14 NewNode
/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0 360 28.91011 CLW 2
div sub 9.41168 CLW 2 div sub 17.7582 3.81314 /mtrx CM def T scale
0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end


@endspecial FB(Node)g(B)118 1792 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /r 14.22636 def /Lineto
{ Arcto } def false pop end /AngleA 0. def /AngleB 90. def /armA 10.0
def /armB 0.0 def NCAngle  } if end gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 712 1624 a Fs
(\\rput[tl]\(0,2\){\\rnode{A}{\\psframebox{Node)20 b(A}}})712
1684 y(\\rput[br]\(4,0\){\\ovalnode{B}{Node)f(B}})712 1744
y(\\ncangle[angleB=90,)j(armB=0,)g(linearc=.5]{A}{B})591 1914
y FA(\\ncangles)p Fz(*[)p Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p
FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r FA(})712 1995 y Fu(\\ncangles)13
b FB(is)f(similar)i(to)f Fu(\\ncangle)p FB(,)f(but)h(the)g(length)h(of)e(arm)
h(A)g(is)f(\256xed)712 2055 y(by)f(the)g Fu(armA)g FB(parameter)m(.)18
b(Arm)10 b(A)g(is)g(connected)i(to)e(arm)h(B)g(by)f(two)g(line)712
2115 y(segments)17 b(that)g(meet)h(arm)f(A)f(and)g(each)i(other)e(at)h(right)
g(angles.)31 b(The)712 2176 y(angle)14 b(at)f(which)f(they)h(join)g(arm)g(B,)
g(and)f(the)h(length)h(of)e(the)h(connecting)712 2236 y(segments,)j(depends)f
(on)g(the)g(positions)g(of)g(the)g(two)g(arms.)26 b Fu(\\ncangles)712
2296 y FB(generally)13 b(draws)f(a)g(total)h(of)e(four)h(line)h(segments.)
1576 2278 y Fi(5)1611 2296 y FB(For)e(example:)p 591 2340 544
2 v 646 2371 a Fh(5)662 2386 y Fg(Hence)e(there)h(is)f(one)h(more)g(angle)f
(than)g Ff(\\ncangle)p Fg(,)h(and)g(hence)f(the)h Fd(s)f Fg(in)h
Ff(\\ncangles)p Fg(.)591 2828 y Fp(Node)f(connections)1016
b(13)p eop
%%Page: 14 14
13 bop 118 48 a
 tx@Dict begin gsave STV CP T 11.5818 3.95552 43.75 21.875 3.81314
 tx@NodeDict begin /TheNodeA 16 NewNode InitRnode  end end grestore
end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 3.95552
neg 39.95 11.5818 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke
 grestore end

@endspecial
FB(Node)11 b(A)397 449 y
 tx@Dict begin gsave STV CP T  tx@NodeDict begin /TheNodeB 14 NewNode
/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0 360 28.91011 CLW 2
div sub 9.41168 CLW 2 div sub 17.7582 3.81314 /mtrx CM def T scale
0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end

@endspecial
FB(Node)g(B)118 472 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /r 4.26773 def /Lineto
{ Arcto } def false pop end /AngleA -90. def /AngleB 0. def /armA 28.45274
def /armB 14.22636 def NCAngles  } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end
 712 187 a Fs
(\\rput[tl]\(0,4\){\\rnode{A}{\\psframebox{Node)20 b(A}}})712
247 y(\\rput[br]\(4,0\){\\ovalnode{B}{Node)f(B}})712 307 y
(\\ncangles[angleA=-90,)j(armA=1cm,)g(armB=.5cm,)h(linearc=.15]{A}{B})712
595 y FB(Let')m(s)12 b(see)g(what)f(happens)g(to)g(the)h(previous)f(example)h
(when)f(we)g(change)712 655 y Fu(angleB)p FB(:)118 779 y
 tx@Dict begin gsave STV CP T 11.5818 3.95552 43.75 21.875 3.81314
 tx@NodeDict begin /TheNodeA 16 NewNode InitRnode  end end grestore
end
 16
w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 3.95552
neg 39.95 11.5818 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke
 grestore end

@endspecial FB(Node)g(A)397 1180
y
 tx@Dict begin gsave STV CP T  tx@NodeDict begin /TheNodeB 14 NewNode
/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0 360 28.91011 CLW 2
div sub 9.41168 CLW 2 div sub 17.7582 3.81314 /mtrx CM def T scale
0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end

@endspecial FB(Node)g(B)118 1203
y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /r 4.26773 def /Lineto
{ Arcto } def false pop end /AngleA -90. def /AngleB 135. def /armA
28.45274 def /armB 14.22636 def NCAngles  } if end gsave 0.8 SLW 0.
setgray 0 setlinecap stroke  grestore  grestore end
 118 1203 a
 tx@Dict begin { tx@NodeDict begin tx@NodeDict /TheNodeA known { 0.0
-90. 0.0 /TheNodeA load GetEdge } { CP } ifelse end } PutCoor PutBegin
 end
 118 1203 a
 tx@Dict begin { 0.0 0.0 0.0 0.0 -90.  /a ED add 2 div /h ED 2 div
/w ED /s a sin def /c a cos def /b s abs c abs 2 copy gt dup /q ED
{ pop } { exch pop } ifelse def /w1 c b div w mul def /h1 s b div h
mul def q { w1 abs w sub dup c mul abs } { h1 abs h sub dup s mul abs
} ifelse /z ED abs /y ED /x ED q { x s div c mul abs y gt } { x c div
s mul abs y gt } ifelse { x x mul y y mul sub z z mul add sqrt z add
} { q { x s div } { x c div } ifelse abs } ifelse a PtoC h1 add exch
w1 add exch } PutCoor PutBegin  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  /ArrowA { moveto } def
/ArrowB { } def 0.0 0.0 /y ED /x ED /r 11.38092 def /c 57.2957 r Div
def /angleA 0. 0.0 c mul 2 div sub def /angleB -90. 0.0 c mul 2 div
add def x y r angleA angleB arcn  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial
118 1203 a
 tx@Dict begin { 11.38092 30.63216 7.21277 2.15988 -45.  /a ED add
2 div /h ED 2 div /w ED /s a sin def /c a cos def /b s abs c abs 2
copy gt dup /q ED { pop } { exch pop } ifelse def /w1 c b div w mul
def /h1 s b div h mul def q { w1 abs w sub dup c mul abs } { h1 abs
h sub dup s mul abs } ifelse /z ED abs /y ED /x ED q { x s div c mul
abs y gt } { x c div s mul abs y gt } ifelse { x x mul y y mul sub
z z mul add sqrt z add } { q { x s div } { x c div } ifelse abs } ifelse
a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 55 1213 a Fs(angleA)118 1203 y
 tx@Dict begin PutEnd  end
 -25 1274 a Fs(armA)77
1293 y
 tx@Dict begin CP CP translate 1.44075 2.79187 scale NET  end
 FB({)77 1293 y
 tx@Dict begin CP CP translate 1 1.44075 div 1 2.79187 div scale NET
 end
 118 1203 a
 tx@Dict begin PutEnd  end
 118 1203 a
 tx@Dict begin PutEnd  end
 118 1203 a
 tx@Dict begin { tx@NodeDict begin tx@NodeDict /TheNodeB known { 0.0
135. 0.0 /TheNodeB load GetEdge } { CP } ifelse end } PutCoor PutBegin
 end
 118
1203 a
 tx@Dict begin { 0.0 0.0 0.0 0.0 135.  /a ED add 2 div /h ED 2 div
/w ED /s a sin def /c a cos def /b s abs c abs 2 copy gt dup /q ED
{ pop } { exch pop } ifelse def /w1 c b div w mul def /h1 s b div h
mul def q { w1 abs w sub dup c mul abs } { h1 abs h sub dup s mul abs
} ifelse /z ED abs /y ED /x ED q { x s div c mul abs y gt } { x c div
s mul abs y gt } ifelse { x x mul y y mul sub z z mul add sqrt z add
} { q { x s div } { x c div } ifelse abs } ifelse a PtoC h1 add exch
w1 add exch } PutCoor PutBegin  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  /ArrowA { moveto } def
/ArrowB { } def 0.0 0.0 /y ED /x ED /r 11.38092 def /c 57.2957 r Div
def /angleA 0. 0.0 c mul 2 div add def /angleB 133. 0.0 c mul 2 div
sub def x y r angleA angleB arc  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial 118 1203 a
 tx@Dict begin { 11.38092 30.63216 7.21277 2.15988 50.5  /a ED add
2 div /h ED 2 div /w ED /s a sin def /c a cos def /b s abs c abs 2
copy gt dup /q ED { pop } { exch pop } ifelse def /w1 c b div w mul
def /h1 s b div h mul def q { w1 abs w sub dup c mul abs } { h1 abs
h sub dup s mul abs } ifelse /z ED abs /y ED /x ED q { x s div c mul
abs y gt } { x c div s mul abs y gt } ifelse { x x mul y y mul sub
z z mul add sqrt z add } { q { x s div } { x c div } ifelse abs } ifelse
a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 55
1213 a Fs(angleB)118 1203 y
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 118 1203 a
 tx@Dict begin PutEnd  end
 118 1203 a
 tx@Dict begin PutEnd  end
 118 1203
a
 tx@Dict begin tx@NodeDict begin /t 2. def LPut end PutBegin  end
 118 1203 a
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{ } def /RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED
a Rot /RAngle [ RAngle dup a add ] cvx def  end
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 tx@Dict begin STP newpath 0.8 SLW 0. setgray  /ArrowA { moveto } def
/ArrowB { } def [ -9.95863 0.0 -9.95863 -9.95863 0.0 -9.95863  /Lineto
/lineto load def false Line  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial 118 1203
a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 118 1203 a
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 118 1203 a
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end
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10 NewNode InitPnode  end end grestore end
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a
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 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0 3.0 /TheNodearm
/TheNodebrak InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 712 887 a Fs(\\rput[tl]\(0,4\){\\rnode{A}{\\psframebox{Node)20
b(A}}})712 947 y(\\rput[br]\(4,0\){\\ovalnode{B}{Node)f(B}})712
1007 y(\\ncangles[angleA=-90,)j(angleB=135,)f(armA=1cm,)i(armB=.5cm,)781
1068 y(linearc=.15]{A}{B})591 1325 y FA(\\ncloop)p Fz(*[)p
Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p FA({)p Fx(nodeA)p FA(}{)p
Fx(nodeB)r FA(})712 1406 y Fu(\\ncloop)12 b FB(is)g(also)f(in)h(the)g(same)g
(family)g(as)g Fu(\\ncangle)f FB(and)h Fu(\\ncangles)p FB(,)f(but)712
1467 y(now)18 b(typically)h(5)e(line)i(segments)e(are)h(drawn.)34
b(Hence,)20 b Fu(\\ncloop)d FB(can)712 1527 y(reach)f(around)e(to)h(opposite)
g(sides)f(of)h(the)g(nodes.)25 b(The)15 b(lengths)g(of)f(the)712
1587 y(arms)19 b(are)f(\256xed)g(by)g Fu(armA)g FB(and)h Fu(armB)p
FB(.)f(Starting)h(at)f(arm)h(A,)f Fu(\\ncloop)712 1647 y FB(makes)13
b(a)f(90)g(degree)g(turn)g(to)g(the)h(left,)f(drawing)g(a)g(segment)g(of)g
(length)820 1749 y FA(loopsize=)p Fx(dim)497 b Fv(Default:)20
b FA(1cm)712 1851 y FB(This)13 b(segment)h(connects)f(to)g(arm)g(B)g(the)h
(way)e(arm)i(A)e(connects)h(to)g(arm)712 1911 y(B)f(with)g
Fu(\\ncline)p FB(;)h(that)g(is,)f(two)f(more)i(segments)f(are)g(drawn,)g
(which)f(join)712 1971 y(the)h(\256rst)e(segment)h(and)g(each)g(other)h(at)f
(right)g(angles,)g(and)g(then)g(join)g(arm)712 2031 y(B.)h(For)g(example:)215
2226 y
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 tx@NodeDict begin /TheNodea 16 NewNode InitRnode  end end grestore
end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 8.95914
neg 69.48361 19.93428 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial Fn(A)24
b(loop)531 2226 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0 0.0 /TheNodea /TheNodea
InitNC { tx@Dict begin /r 5.69046 def /Lineto { Arcto } def false pop
end /AngleA 0. def /AngleB 180. def /armA 14.22636 def /armB 14.22636
def /loopsize 28.45274 def NCLoop  } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end
 531 2226 a
 tx@Dict begin tx@NodeDict begin /t 3.5 def LPut end PutBegin  end
 531 2226 a
 tx@Dict begin NAngle  tx@Dict /TMatrix known not { /TMatrix { } def
/RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED a Rot
/RAngle [ RAngle dup a add ] cvx def  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  /ArrowA { BeginArrow
2.0 5. Tbar 0 CLW 2 div T newpath false 0.4 1.4 1.5 2. Arrow  EndArrow
 moveto } def /ArrowB { BeginArrow 2.0 5. Tbar 0 CLW 2 div T newpath
false 0.4 1.4 1.5 2. Arrow  EndArrow  } def [ -14.22636 -5.69046 14.22636
-5.69046  /Lineto /lineto load def false Line  gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end


@endspecial 531 2226 a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 531 2226 a
 tx@Dict begin PutEnd  end
 531 2226 a
 tx@Dict begin tx@NodeDict begin /t 3.5 def LPut end PutBegin  end
 531 2226 a
 tx@Dict begin NAngle 180 add  tx@Dict /TMatrix known not { /TMatrix
{ } def /RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED
a Rot /RAngle [ RAngle dup a add ] cvx def  end
 531
2226 a
 tx@Dict begin { 9.95863 tx@Dict /NCLW known { NCLW add } if 36.09341
7.21277 2.15988 NAngle 90 sub  NAngle 180 add  sub /a ED add 2 div
/h ED 2 div /w ED /s a sin def /c a cos def /b s abs c abs 2 copy gt
dup /q ED { pop } { exch pop } ifelse def /w1 c b div w mul def /h1
s b div h mul def q { w1 abs w sub dup c mul abs } { h1 abs h sub dup
s mul abs } ifelse exch pop add a PtoC h1 add exch w1 add exch } PutCoor
PutBegin  end
 456 2236 a Fs(loopsize)531 2226 y
 tx@Dict begin PutEnd  end
 531 2226 a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 531 2226
a
 tx@Dict begin PutEnd  end
 712 2166 a Fs(\\rnode{a}{\\psframebox{\\Huge)c(A)j(loop}})712
2226 y(\\ncloop[angleB=180,loopsize=1,arm=.5,linearc=.2]{->}{)o(a}{)o(a})712
2386 y FB(In)12 b(this)h(example,)g(node)f(A)g(and)g(node)g(B)g(are)h(the)f
(same)h(node!)18 b(Y)-5 b(ou)11 b(can)712 2446 y(do)h(this)f(with)h(all)g
(the)g(node)g(connections)g(\(but)f(it)h(doesn')o(t)g(always)f(make)712
2506 y(sense\).)712 2587 y(Here)h(is)g(an)g(example)h(where)f
Fu(\\ncloop)g FB(connects)h(two)e(dif)o(ferent)i(nodes:)591
2828 y Fp(Node)c(connections)1016 b(14)p eop
%%Page: 15 15
14 bop 165 56 a
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end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 6.71689
neg 37.59984 13.0414 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial
Fv(Begin)374 261 y
 tx@Dict begin gsave STV CP T 13.0414 4.0281 32.19301 16.0965 4.50664
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end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 4.0281
neg 28.393 13.0414 .5 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial
Fv(End)520 261 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0 0.0 /TheNodeA /TheNodeB
InitNC { tx@Dict begin /r 5.69046 def /Lineto { Arcto } def false pop
end /AngleA 180. def /AngleB 0. def /armA 14.22636 def /armB 14.22636
def /loopsize 25.60728 def NCLoop  } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end
 531 152 a
 tx@Dict begin tx@NodeDict begin /t 1.5 def LPut end PutBegin  end
 531 152 a
 tx@Dict begin NAngle  tx@Dict /TMatrix known not { /TMatrix { } def
/RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED a Rot
/RAngle [ RAngle dup a add ] cvx def  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  /ArrowA { BeginArrow
2.0 5. Tbar 0 CLW 2 div T newpath false 0.4 1.4 1.5 2. Arrow  EndArrow
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false 0.4 1.4 1.5 2. Arrow  EndArrow  } def [ -12.80363 -5.69046 12.80363
-5.69046  /Lineto /lineto load def false Line  gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end


@endspecial 531 152 a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 531 152 a
 tx@Dict begin PutEnd  end
 531 152 a
 tx@Dict begin tx@NodeDict begin /t 1.5 def LPut end PutBegin  end
 531 152 a
 tx@Dict begin NAngle 180 add  tx@Dict /TMatrix known not { /TMatrix
{ } def /RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED
a Rot /RAngle [ RAngle dup a add ] cvx def  end
 531 152
a
 tx@Dict begin { 9.95863 tx@Dict /NCLW known { NCLW add } if 36.09341
7.21277 2.15988 NAngle 90 sub  NAngle 180 add  sub /a ED add 2 div
/h ED 2 div /w ED /s a sin def /c a cos def /b s abs c abs 2 copy gt
dup /q ED { pop } { exch pop } ifelse def /w1 c b div w mul def /h1
s b div h mul def q { w1 abs w sub dup c mul abs } { h1 abs h sub dup
s mul abs } ifelse exch pop add a PtoC h1 add exch w1 add exch } PutCoor
PutBegin  end
 457 163 a Fs(loopsize)531 152 y
 tx@Dict begin PutEnd  end
 531 152 a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 531 152 a
 tx@Dict begin PutEnd  end
 712 30
a Fs(\\parbox{3cm}{\045)712 90 y(\\rnode{A}{\\psframebox{\\large\\bf)20
b(Begin}})712 150 y(\\vspace{1cm}\\hspace*{\\\256ll})712 211
y(\\rnode{B}{\\psframebox{\\large\\bf)g(End}})712 271 y
(\\ncloop[angleA=180,loopsize=.9,arm=.5,linearc=.2]{->}{A}{)o(B}})591
423 y FB(The)12 b(next)g(two)g(node)g(connections)g(are)h(a)f(little)h(dif)o
(ferent)g(from)f(the)g(rest.)591 566 y FA(\\nccurve)p Fz(*[)p
Fy(par)p Fz(]{)p Fy(arrows)q Fz(})p FA({)p Fx(nodeA)p FA(}{)p
Fx(nodeB)r FA(})712 647 y Fu(\\nccurve)f FB(draws)h(a)g(bezier)h(curve)f
(between)g(the)g(nodes.)118 1052 y
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end
 16 w @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 3.8 neg 3.95552
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@endspecial FB(Node)f(A)397 769 y
 tx@Dict begin gsave STV CP T  tx@NodeDict begin /TheNodeB 14 NewNode
/X 17.7582 def /Y 3.81314 def /w 28.91011 def /h 9.41168 def /NodePos
{ OvalNodePos } def end end grestore end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0 360 28.91011 CLW 2
div sub 9.41168 CLW 2 div sub 17.7582 3.81314 /mtrx CM def T scale
0 0 1 5 3 roll arc mtrx setmatrix closepath gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore end


@endspecial FB(Node)g(B)118 1069 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { /AngleA 0.  def /AngleB 180.  def
0.67  0.67  NCCurve  } if end gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 712 842 a Fs
(\\rput[bl]\(0,0\){\\rnode{A}{\\psframebox{Node)19 b(A}}})712
902 y(\\rput[tr]\(4,3\){\\ovalnode{B}{Node)h(B}})712 962 y
(\\nccurve[angleB=180]{A}{B})712 1191 y FB(Y)-5 b(ou)9 b(specify)g(the)g
(angle)g(at)g(which)g(the)g(curve)g(joins)f(the)i(nodes)e(by)g(setting)712
1251 y(the)17 b Fu(angle)f FB(\(and)g Fu(angleA)h FB(and)f
Fu(angleB)p FB(\))g(parameter)m(.)32 b(The)17 b(distance)g(to)712
1312 y(the)c(control)f(points)g(is)g(set)g(with)g(the)820 1413
y FA(ncurv=)p Fx(num)575 b Fv(Default:)20 b FA(.67)712 1515
y FB(\(and)e Fu(ncurvA)f FB(and)g Fu(ncurvB)p FB(\))g(parameter)m(.)36
b(A)16 b(lower)i(number)f(gives)h(a)712 1575 y(tighter)h(curve.)36
b(\(The)19 b(distance)g(between)f(the)h(beginning)f(of)g(the)g(arc)712
1635 y(and)e(the)f(\256rst)f(control)i(point)f(is)g(one-half)g
Fu(ncurvA)g FB(times)h(the)f(distance)712 1696 y(between)e(the)f(two)g
(endpoints.\))591 1797 y FA(\\nccircle)p Fz(*[)p Fy(par)p Fz(]{)p
Fy(arrows)q Fz(})p FA({)p Fx(node)r FA(}{)p Fx(radius)r FA(})712
1878 y Fu(\\nccircle)d FB(draws)e(a)i(circle,)h(or)e(part)h(of)f(a)h(circle,)
h(that,)g(if)f(complete,)h(would)712 1938 y(pass)h(through)f(the)i(center)f
(of)g(the)g(node)g(counterclockwise,)h(at)f(an)g(angle)712
1999 y(of)h Fu(angleA)p FB(.)460 2239 y
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end
 Fq(back)570 2239 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 3.0 3.0 /TheNodeA /TheNodeA
InitNC { /AngleA 0. def /r 19.91684 def NCCircle x y r angleA angleB
{ ArrowB } { sub } ArcArrow arc end } if end gsave 0.8 SLW 0. setgray
0 setlinecap stroke  grestore  grestore end

712 2107 a Fs(\\rnode{A}{\\bf)22 b(back})712 2168 y
(\\nccircle[nodesep=3pt]{->}{A}{.7cm})712 2228 y(\\kern)h(5pt)712
2363 y Fu(\\nccircle)18 b FB(can)g(only)g(connect)g(a)g(node)g(to)g(itself;)j
(it)d(is)g(the)g(only)g(node)712 2423 y(connection)c(with)e(this)g(property)m
(.)18 b Fu(\\nccircle)12 b FB(is)g(also)h(special)g(because)f(it)712
2483 y(has)e(an)g(additional)h(ar)o(gument,)g(for)e(specifying)h(the)g
(radius)g(of)f(the)i(circle.)591 2828 y Fp(Node)e(connections)1016
b(15)p eop
%%Page: 16 16
15 bop 591 50 a FB(The)12 b(last)g(two)g(node)g(connections)g(are)g(also)g
(special.)18 b(Rather)13 b(than)f(connecting)591 110 y(the)f(nodes)f(with)h
(an)g(open)g(curve,)g(they)g(enclose)g(the)g(nodes)g(in)g(a)g(box)f(or)h
(curved)591 170 y(box.)24 b(Y)-5 b(ou)14 b(can)h(think)g(of)g(them)g(as)f
(variants)h(of)g Fu(\\ncline)f FB(and)h Fu(\\ncarc)p FB(.)24
b(In)15 b(both)591 230 y(cases,)c(the)i(half)f(the)g(width)g(of)g(the)h(box)e
(is)712 361 y FA(boxsize=)p Fx(dim)608 b Fv(Default:)20 b FA(.4cm)591
492 y FB(Y)-5 b(ou)19 b(have)h(to)g(set)g(this)f(yourself)h(to)g(the)g(right)
g(size,)i(so)d(that)i(the)f(nodes)f(\256t)591 552 y(inside)13
b(the)h(box.)21 b(The)13 b Fu(boxsize)g FB(parameter)i(actually)g(sets)e(the)
g Fu(boxheight)g FB(and)591 612 y Fu(boxdepth)f FB(parameters.)22
b(The)14 b(ends)f(of)g(the)h(boxes)f(extend)h(beyond)f(the)h(nodes)591
672 y(by)d Fu(nodesepA)h FB(and)g Fu(nodesepB)p FB(.)591 816
y FA(\\ncbox)p Fz(*[)p Fy(par)p Fz(])p FA({)p Fx(nodeA)p FA(}{)p
Fx(nodeB)r FA(})712 897 y Fu(\\ncbox)22 b FB(encloses)f(the)h(nodes)f(in)h(a)
g(box)f(with)h(straight)g(sides.)45 b(For)712 957 y(example:)177
1328 y
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end
 FB(Idea)12 b(1)413 1125 y
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end
 FB(Idea)h(2)118 1329 y
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /NCLW CLW def
tx@NodeDict begin 0.0 0.0 neg 14.22636 14.22636 /TheNodeA /TheNodeB
InitNC { tx@Dict begin /r 5.69046 def /Lineto { Arcto } def false pop
end 17.07181 17.07181 NCBox  } if end gsave 0.8 SLW 0. setgray 5.0
3.0 2 DashLine  grestore  grestore end
 712
1131 a Fs(\\rput[bl]\(.5,0\){\\rnode{A}{Idea)20 b(1}})712 1191
y(\\rput[tr]\(3.5,2\){\\rnode{B}{Idea)g(2}})712 1251 y
(\\ncbox[nodesep=.5cm,boxsize=.6,linearc=.2,)758 1312 y
(linestyle=dashed]{A}{B})591 1510 y FA(\\ncarcbox)p Fz(*[)p
Fy(par)p Fz(])p FA({)p Fx(nodeA)p FA(}{)p Fx(nodeB)r FA(})712
1591 y Fu(\\ncarcbox)14 b FB(encloses)h(the)h(nodes)e(in)i(a)f(curved)g(box)g
(that)g(is)g Fu(arcangleA)712 1652 y FB(away)d(from)g(the)h(line)f
(connecting)h(the)g(two)e(nodes.)177 2024 y
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 FB(1)508 1820 y
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FB(2)118 2024 y
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tx@NodeDict begin 0.0 0.0 neg 5.69046 5.69046 /TheNodeA /TheNodeB InitNC
{ 50. 11.38092 11.38092 11.38092 NCArcBox  } if end gsave 0.8 SLW 0.
setgray 0 setlinecap stroke  grestore  grestore end
 712 1826 a Fs(\\rput[bl]\(.5,0\){\\rnode{A}{1}})712
1886 y(\\rput[tr]\(3.5,2\){\\rnode{B}{2}})712 1946 y
(\\ncarcbox[nodesep=.2cm,boxsize=.4,linearc=.4,)758 2006 y
(arcangle=50]{<->}{)o(A}{B})712 2205 y FB(The)i(arc)f(is)g(drawn)f
(counterclockwise)i(from)f(node)g(A)f(to)i(node)e(B.)591 2348
y(There)e(is)g(one)g(other)h(node)f(connection)h(parameter)g(that)g(applies)g
(to)f(all)h(the)g(node)591 2408 y(connections,)i(except)h Fu(\\ncarcbox)p
FB(:)712 2539 y FA(offset=)p Fx(dim)694 b Fv(Default:)20 b
FA(0pt)591 2828 y Fp(Node)9 b(connections)1016 b(16)p eop
%%Page: 17 17
16 bop 591 50 a FB(\(Y)-5 b(ou)15 b(can)i(also)f(set)g Fu(offsetA)f
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} ifelse def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs
w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop
add a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
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 177 1069 a
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 712
929 a Fs(\\cnode\(0,0\){.5cm}{root})712 989 y(\\cnode*\(3,1.5\){4pt}{A})712
1049 y(\\cnode*\(3,-1.5\){4pt}{C})712 1110 y
(\\psset{nodesep=3pt,shortput=nab})712 1170 y(\\ncline{root}{A}\303{$x$})712
1230 y(\\ncline{root}{C}_{$y$})591 1377 y FB(Y)-5 b(ou)19 b(can)h(still)h
(have)f(parameter)h(changes)f(with)g(the)h(short)e Fs(\303)h
FB(and)g Fs(_)f FB(forms.)591 1437 y(Another)11 b(example)i(is)f(given)g(on)g
(page)g(27.)591 1526 y(If)k(you)g(have)h(set)f Fu(shortput=nab)p
FB(,)g(and)h(then)g(you)f(want)g(to)h(use)f(a)h(true)g Fs(\303)f
FB(or)g Fs(_)591 1587 y FB(character)e(right)g(after)g(a)f(node)g
(connection,)i(you)e(must)g(precede)h(the)g Fs(\303)f FB(or)g
Fs(_)g FB(by)591 1647 y Fs({})e FB(so)g(that)i(PST)n(ricks)f(does)f(not)h
(convert)h(it)f(to)g Fs(\\naput)g FB(or)g Fs(\\nbput)p FB(.)591
1736 y(Y)-5 b(ou)11 b(can)h(change)h(the)f(characters)h(that)g(you)e(use)h
(for)g(the)g(short)g(form)g(with)g(the)712 1881 y FA(\\MakeShortNab{)p
Fx(char1)p FA(}{)p Fx(char2)t FA(})591 2012 y FB(command.)791
1994 y Fi(6)591 2101 y FB(The)f Fu(shortput=tablr)e FB(and)i
Fu(shortput=tab)e FB(options)i(are)g(described)g(on)g(pages)g(24)591
2161 y(and)h Fq(??)p FB(,)f(respectively)m(.)366 2359 y FC(9)70
b(Node)21 b(connection)f(labels:)27 b(II)591 2480 y FB(Now)10
b(the)j(second)f(group)f(of)h(node)g(connections:)p 591 2524
544 2 v 646 2555 a Fh(6)662 2570 y Fg(Y)l(ou)h(can)g(also)g(use)g
Ff(\\MakeShortNab)g Fg(if)h(you)f(want)g(to)g(use)g Fd(\303)h
Fg(and)f Fd(_)g Fg(with)h(non-standard)591 2620 y(category)7
b(codes.)13 b(Just)8 b(invoke)g(the)g(command)g(after)h(you)f(have)g(made)g
(your)h Fd(\\catcode)g Fg(changes.)591 2828 y Fp(Node)g(connection)g(labels:)
14 b(II)884 b(22)p eop
%%Page: 23 23
22 bop 712 50 a FA(\\tvput)p Fz(*[)p Fy(par)5 b Fz(])p FA({)p
Fx(stuf)o(f)h FA(})712 125 y(\\tlput)p Fz(*[)p Fy(par)f Fz(])p
FA({)p Fx(stuf)o(f)h FA(})712 199 y(\\trput)p Fz(*[)p Fy(par)f
Fz(])p FA({)p Fx(stuf)o(f)h FA(})712 274 y(\\thput)p Fz(*[)p
Fy(par)f Fz(])p FA({)p Fx(stuf)o(f)h FA(})712 349 y(\\taput)p
Fz(*[)p Fy(par)f Fz(])p FA({)p Fx(stuf)o(f)h FA(})712 423 y(\\tbput)p
Fz(*[)p Fy(par)f Fz(])p FA({)p Fx(stuf)o(f)h FA(})591 549 y
FB(The)15 b(dif)o(ference)h(between)f(between)g(these)g(commands)h(and)f(the)
g Fs(\\n*put)g FB(com-)591 609 y(mands)8 b(is)h(that)g(these)g(\256nd)f(the)h
(position)g(as)g(an)g(intermediate)h(point)f(between)g(the)591
669 y(centers)i(of)f(the)h(nodes,)f(either)i(in)f(the)g(horizontal)g(or)g
(vertical)h(direction.)18 b(These)591 729 y(are)13 b(good)g(for)f(trees)h
(and)g(mathematical)j(diagrams,)e(where)e(it)i(can)f(sometimes)591
789 y(be)i(nice)i(to)f(have)g(the)g(labels)g(be)g(horizontally)g(or)g
(vertically)h(aligned.)29 b(The)16 b Fs(t)591 850 y FB(stands)11
b(for)h(\252tree\272.)591 938 y(Y)-5 b(ou)11 b(specify)h(the)h(position)f(by)
f(setting)i(the)712 1063 y FA(tpos=)p Fx(num)740 b Fv(Default:)20
b FA(.5)591 1189 y FB(parameter)m(.)591 1277 y Fu(\\tvput)p
FB(,)e Fu(\\tlput)f FB(and)h Fu(\\trput)f FB(\256nd)h(the)g(position)g(that)g
(lies)g(fraction)h Fr(tpos)f FB(in)g(the)591 1337 y Ft(vertical)13
b FB(direction)g(from)g(the)g(upper)f(node)g(to)h(the)g(lower)f(node.)19
b Fu(\\thput)p FB(,)12 b Fu(\\taput)591 1398 y FB(and)21 b
Fu(\\tbput)f FB(\256nd)h(the)g(position)g(that)h(lies)g(fraction)f
Fr(tpos)h FB(in)g(the)f Ft(horizontal)591 1458 y FB(direction)14
b(from)f(the)g(left)h(node)f(to)g(the)h(right)f(node.)21 b(Then)13
b(the)g(commands)h(put)591 1518 y(the)e(label)h(on)f(or)f(next)i(to)f(the)g
(line,)h(as)f(follows:)924 1645 y Ft(Command)48 b(Dir)n(ection)63
b(Placement)924 1729 y Fu(\\tvput)134 b FB(vertical)102 b(middle)924
1802 y Fu(\\tlput)146 b FB(vertical)102 b(left)924 1874 y Fu(\\trput)141
b FB(vertical)102 b(right)924 1946 y Fu(\\thput)132 b FB(horizontal)51
b(middle)924 2018 y Fu(\\taput)134 b FB(horizontal)51 b(above)924
2091 y Fu(\\tbput)132 b FB(horizontal)51 b(below)591 2214 y(Here)11
b(is)h(an)g(example:)712 2339 y Fs(\\[)758 2399 y
(\\setlength{\\arraycolsep}{1.1cm})758 2459 y(\\begin{array}{cc})803
2520 y(\\Rnode{a}{\(X-A\)})20 b(&)j(\\Rnode{b}{A})e(\\\\[1.5cm])803
2580 y(\\Rnode{c}{x})h(&)h(\\Rnode{d}{\\tilde{X}})758 2640
y(\\end{array})591 2828 y Fp(Node)9 b(connection)g(labels:)h(II)888
b(23)p eop
%%Page: 24 24
23 bop 758 50 a Fs(\\psset{nodesep=5pt,arrows=->})758 110 y
(\\everypsbox{\\scriptstyle})758 170 y(\\ncline{a}{c}\\tlput{r})758
230 y(\\ncline{a}{b}\\taput{u})758 291 y
(\\ncline[linestyle=dashed]{c}{d}\\tbput{b})758 351 y
(\\ncline{b}{d}\\trput{s})712 411 y(\\])720 585 y
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b FB(\261)e Ft(A)p FB(\))1119 585 y
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end
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835 y
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tx@NodeDict begin /TheNoded 16 NewNode InitRnode  end end grestore
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def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodea /TheNodec
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 0 setlinecap stroke
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a
 tx@Dict begin tx@NodeDict begin /t 0.5 def tx@NodeDict /HPutPos known
{ HPutPos } { CP /Y ED /X ED /NAngle 0 def /NCLW 0 def } ifelse /Sin
NAngle sin def /Cos NAngle cos def /s 5.0 NCLW add def /l 1.50528 def
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LPutCoor end PutBegin  end
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def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodea /TheNodeb
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{ VPutPos } { CP /Y ED /X ED /NAngle 0 def /NCLW 0 def } ifelse /Sin
NAngle sin def /Cos NAngle cos def /s 5.0 NCLW add def /l 1.92001 def
/r 1.92001 def /h -0.26035 def /d 3.68947 def /flag true def VPutAdjust
LPutCoor end PutBegin  end
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a Fc(u)1278 708 y
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} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodec /TheNoded
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 5.0 3.0 -2 0 add
DashLine  grestore  grestore end
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{ VPutPos } { CP /Y ED /X ED /NAngle 0 def /NCLW 0 def } ifelse /Sin
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LPutCoor end PutBegin  end
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708 y
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} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodeb /TheNoded
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{ HPutPos } { CP /Y ED /X ED /NAngle 0 def /NCLW 0 def } ifelse /Sin
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/r 1.49376 def /h -0.26035 def /d 3.68947 def /flag false def HPutAdjust
LPutCoor end PutBegin  end
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585 a
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end
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tx@NodeDict begin /TheNoded 16 NewNode InitRnode  end end grestore
end
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708 y
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} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodea /TheNodec
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 0 setlinecap stroke
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0.0 NAngle 90 sub  /a ED add 2 div /h ED 2 div /w ED /s a sin def /c
a cos def /b s abs c abs 2 copy gt dup /q ED { pop } { exch pop } ifelse
def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs w sub dup
c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop add a PtoC
h1 add exch w1 add exch } PutCoor PutBegin  end
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 1966
708 a
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def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodea /TheNodeb
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 0 setlinecap stroke
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 1966 708 a
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0.0768 NAngle 90 add  /a ED add 2 div /h ED 2 div /w ED /s a sin def
/c a cos def /b s abs c abs 2 copy gt dup /q ED { pop } { exch pop
} ifelse def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs
w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop
add a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 1958 715 a Fc(u)1966
708 y
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 1966 708 a
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 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodec /TheNoded
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 5.0 3.0 -2 0 add
DashLine  grestore  grestore end
 1966 708 a
 tx@Dict begin tx@NodeDict begin /t .5 def LPut end PutBegin  end
 1966 708 a
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0.0768 NAngle 90 sub  /a ED add 2 div /h ED 2 div /w ED /s a sin def
/c a cos def /b s abs c abs 2 copy gt dup /q ED { pop } { exch pop
} ifelse def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs
w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop
add a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 1958 719
a Fc(b)1966 708 y
 tx@Dict begin PutEnd  end
 1966 708 a
 tx@Dict begin PutEnd  end
 1966 708 a
 tx@Dict begin gsave STV newpath 0.8 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { BeginArrow false 0.4 1.4 1.5 2. Arrow  EndArrow  }
def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 5.0 5.0 /TheNodeb /TheNoded
InitNC { NCLine  } if end gsave 0.8 SLW 0. setgray 0 setlinecap stroke
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 1966 708 a
 tx@Dict begin tx@NodeDict begin /t .5 def LPut end PutBegin  end
 1966 708
a
 tx@Dict begin { 5.0 tx@Dict /NCLW known { NCLW add } if 2.98753 3.35233
0.0768 NAngle 90 add  /a ED add 2 div /h ED 2 div /w ED /s a sin def
/c a cos def /b s abs c abs 2 copy gt dup /q ED { pop } { exch pop
} ifelse def /w1 c b div w mul def /h1 s b div h mul def q { w1 abs
w sub dup c mul abs } { h1 abs h sub dup s mul abs } ifelse exch pop
add a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 1960 715 a Fc(s)1966 708 y
 tx@Dict begin PutEnd  end
 1966 708 a
 tx@Dict begin PutEnd  end
 599 938 a FB(On)d(the)g(left)g(is)g
(the)g(diagram)h(with)e Fu(\\tlput)p FB(,)h Fu(\\trput)17 b(\\tbput)8
b FB(and)h Fu(\\Rnode)p FB(,)g(as)g(shown)591 998 y(in)14 b(the)h(code.)24
b(On)13 b(the)i(right)f(is)g(the)h(same)f(diagram,)i(but)e(with)g
Fu(\\naput)22 b(\\nbput)591 1058 y FB(and)12 b Fu(\\rnode)p
FB(.)591 1147 y(These)f(do)g(not)h(have)g(a)f(rotation)h(ar)o(gument)h(or)e
(parameter)m(.)18 b(However)n(,)11 b(you)g(can)591 1207 y(rotate)e
Fr(stuff)16 b FB(in)9 b(90)g(degree)h(increments)g(using)e(box)h(rotations)g
(\(e.g.,)h Fu(\\rotateleft)p FB(\).)591 1296 y(If)e(you)g(set)g
Fu(shortput=t)o(ablr)p FB(,)e(then)i(you)g(can)g(use)g(the)g(following)g
(single-character)591 1356 y(abbreviations)k(for)g(the)g Fs(t)h
FB(put)f(commands:)1099 1487 y Ft(Char)-5 b(.)48 b(Short)12
b(for:)1190 1567 y Fs(\303)49 b Fu(\\taput)1181 1640 y Fs(_)g
Fu(\\tbput)1180 1712 y Fs(<)g Fu(\\tlput)1180 1784 y Fs(>)g
Fu(\\trput)591 1908 y FB(Y)-5 b(ou)11 b(can)h(change)h(the)f(character)h
(abbreviations)g(with)712 2049 y FA(\\MakeShortT)l(ablr{)p
Fx(char1)p FA(}{)p Fx(char2)t FA(}{)p Fx(char3)s FA(}{)p Fx(char)q(4)r
FA(})591 2175 y FB(The)i Fs(t)h FB(put)f(commands,)i(including)f(an)f
(example)i(of)e Fu(shortput=tablr)p FB(,)f(will)i(be)591 2235
y(shown)10 b(further)i(when)g(we)g(get)g(to)g(mathematical)j(diagrams)d(and)g
(trees.)591 2324 y Fb(Driver)d(notes:)44 b(The)11 b(node)g(macros)g(use)g
Fa(\\pstV)n(erb)g Fb(and)g Fa(\\pstverbscale)p Fb(.)366 2519
y FC(10)71 b(Attaching)19 b(labels)h(to)f(nodes)591 2640 y
FB(The)12 b(command)591 2828 y Fp(Attaching)d(labels)h(to)g(nodes)899
b(24)p eop
%%Page: 25 25
24 bop 712 50 a FA(\\nput)p Fz(*[)p Fy(par)5 b Fz(])p FA({)p
Fx(refangle)r FA(}{)p Fx(name)r FA(}{)p Fx(stuf)o(f)h FA(})591
171 y FB(af)o(\256xes)14 b Fr(stuff)21 b FB(to)15 b(node)g
Fr(name)q FB(.)24 b(It)15 b(is)f(positioned)h(distance)h Fu(labelsep)e
FB(from)g(the)591 231 y(node,)8 b(in)h(the)g(direction)g Fr(refangle)f
FB(from)g(the)g(center)i(of)e(the)g(node.)16 b(The)9 b(algorithm)591
291 y(is)i(the)i(same)f(as)g(for)g Fu(\\uput)p FB(.)17 b(If)11
b(you)h(want)g(to)g(rotate)h(the)f(node,)g(set)g(the)712 413
y FA(rot=)p Fx(rot)831 b Fv(Default:)20 b FA(0)591 534 y FB(parameter)n(,)e
(where)d Fr(rot)k FB(is)d(a)g(rotation)h(that)f(would)g(be)g(valid)g(for)g
Fu(\\rput)p FB(.)1828 516 y Fi(7)1874 534 y FB(The)591 594
y(position)f(of)h(the)f(label)i(also)e(takes)h(into)g(account)g(the)g
Fu(offsetA)f FB(parameter)m(.)29 b(If)591 654 y Fu(labelsep)16
b FB(is)g(negative,)j(then)e(the)g(distance)g(is)f(from)h(the)g(center)g(of)g
(the)g(node)591 714 y(rather)12 b(than)g(from)g(the)h(boundary)m(,)e(as)h
(with)g Fu(nodesep)p FB(.)591 802 y(Here)f(is)h(how)g(I)f(used)h
Fu(\\nput)g FB(to)g(mark)g(an)g(angle)h(in)f(a)g(previous)g(example:)397
1232 y
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@endspecial FB(Node)f(B)118
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@endspecial FB(Node)g(A)118
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{ pop } { exch pop } ifelse def /w1 c b div w mul def /h1 s b div h
mul def q { w1 abs w sub dup c mul abs } { h1 abs h sub dup s mul abs
} ifelse /z ED abs /y ED /x ED q { x s div c mul abs y gt } { x c div
s mul abs y gt } ifelse { x x mul y y mul sub z z mul add sqrt z add
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w1 add exch } PutCoor PutBegin  end
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/ArrowB { } def 0.0 0.0 /y ED /x ED /r 11.38092 def /c 57.2957 r Div
def /angleA 0. 0.0 c mul 2 div sub def /angleB -70. 0.0 c mul 2 div
add def x y r angleA angleB arcn  gsave 0.8 SLW 0. setgray 0 setlinecap
stroke  grestore end

@endspecial 118
1255 a
 tx@Dict begin { 11.38092 30.63216 7.21277 2.15988 -35.  /a ED add
2 div /h ED 2 div /w ED /s a sin def /c a cos def /b s abs c abs 2
copy gt dup /q ED { pop } { exch pop } ifelse def /w1 c b div w mul
def /h1 s b div h mul def q { w1 abs w sub dup c mul abs } { h1 abs
h sub dup s mul abs } ifelse /z ED abs /y ED /x ED q { x s div c mul
abs y gt } { x c div s mul abs y gt } ifelse { x x mul y y mul sub
z z mul add sqrt z add } { q { x s div } { x c div } ifelse abs } ifelse
a PtoC h1 add exch w1 add exch } PutCoor PutBegin  end
 55 1265 a Fs(angleA)118 1255 y
 tx@Dict begin PutEnd  end
 118 1255 a
 tx@Dict begin PutEnd  end
 118 1255 a
 tx@Dict begin PutEnd  end

118 1255 a
 tx@Dict begin gsave STV newpath 1.2 SLW 0. setgray  /ArrowA { moveto
} def /ArrowB { } def /NCLW CLW def tx@NodeDict begin 0.0 0.0 neg 0.0
0.0 /TheNodeA /TheNodeB InitNC { tx@Dict begin /Lineto /lineto load
def false pop end /AngleA -70. def /AngleB 90. def /armA 10.0 def /armB
28.45274 def NCAngle  } if end gsave 1.2 SLW 0. setgray 0 setlinecap
stroke  grestore  grestore end
 118 1255 a
 tx@Dict begin tx@NodeDict begin /t 1. def LPut end PutBegin  end
 118 1255 a
 tx@Dict begin NAngle  tx@Dict /TMatrix known not { /TMatrix { } def
/RAngle { 0 } def } if /TMatrix [ TMatrix CM ] cvx def /a ED a Rot
/RAngle [ RAngle dup a add ] cvx def  end
 @beginspecial @setspecial
 tx@Dict begin STP newpath 0.8 SLW 0. setgray  0. true 0.0 0.0 9.95863
9.95863 0 Frame  gsave 0.8 SLW 0. setgray 0 setlinecap stroke  grestore
end


@endspecial 118 1255 a
 tx@Dict begin /TMatrix [ TMatrix setmatrix ] cvx def /RAngle [ RAngle
pop ] cvx def  end
 118 1255 a
 tx@Dict begin PutEnd  end
 712 908 a Fs
(\\rput[br]\(4,0\){\\ovalnode{B}{Node)19 b(B}})712 968 y
(\\rput[tl]\(0,3\){\\rnode{A}{\\psframebox{Node)h(A}}})712
1028 y(\\nput[labelsep=0]{-70}{A}{\045)758 1088 y
(\\psarcn\(0,0\){.4cm}{0}{-70)o(})758 1148 y(\\uput{.4cm}[-35]\(0,0\){{\\tt)h
(angleA}}})712 1209 y
(\\ncangle[angleA=-70,angleB=90,armB=1cm,linewidth=1.2pt]{A}{B})712
1269 y(\\ncput[nrot=:U,npos=1]{\\psframe[dimen=middle]\(0,0\)\(.35,.35\)})366
1472 y FC(1)l(1)71 b(Mathematical)19 b(diagrams)h(and)g(graphs)591
1592 y FB(For)c(some)g(applications,)j(such)d(as)h(mathematical)i(diagrams)e
(and)g(graphs,)g(it)591 1652 y(is)e(useful)h(to)h(arrange)f(nodes)g(on)g(a)g
(grid.)29 b(Y)-5 b(ou)16 b(can)g(do)g(this)g(with)h(alignment)591
1713 y(environments,)g(such)f(as)g(T)1061 1723 y(E)1085 1713
y(X')m(s)f Fs(\\halign)p FB(primitive,)j(L)1504 1707 y(a)1518
1713 y(T)1539 1728 y(E)1563 1713 y(X')m(s)e Fs(tabular)f FB(environ-)591
1773 y(ment,)d(and)f(AMS-T)932 1783 y(E)954 1773 y(X')m(s)g
Fs(\\matrix)p FB(,)h(but)g(PST)n(ricks)f(contains)h(its)g(own)f(alignment)591
1833 y(environment)h(that)h(is)f(especially)h(adapted)g(for)e(this)h
(purpose:)712 1969 y FA(\\psmatrix)i(...)k(\\endpsmatrix)591
2090 y FB(Here)11 b(is)h(an)g(example)397 2202 y
 tx@Dict begin gsave STV CP T 7.55716 0.0 7.03876 3.51938 3.61267
tx@NodeDict begin /TheNodeM-1-1-2 16 NewNode InitRnode  end end grestore
end
 Ft(A)247 2380
y
 tx@Dict begin gsave STV CP T 7.55716 0.0 7.03876 3.51938 3.61267
tx@NodeDict begin /TheNodeM-1-2-1 16 NewNode InitRnode  end end grestore
end
 Ft(B)397 2380 y
 tx@Dict begin gsave STV CP T 7.55716 0.0 7.03876 3.51938 3.61267
tx@NodeDict begin /TheNodeM-1-2-2 16 NewNode InitRnode  end end grestore
end
 Ft(E)547 2380 y
 tx@Dict begin gsave STV CP T 7.55716 0.21887 7.68388 3.84193 3.61267
 tx@NodeDict begin /TheNodeM-1-2-3 16 NewNode InitRnode  end end grestore
end
 Ft(C)394 2558 y
 tx@Dict begin gsave STV CP T 7.55716 0.0 8.31749 4.15874 3.61267
tx@NodeDict begin /TheNodeM-1-3-2 16 NewNode InitRnode  end end grestore
end
 Ft(D)712
2197 y Fs($)712 2257 y(\\psmatrix[colsep=1cm,rowsep=1cm])803
2317 y(&)23 b(A)g(\\\\)758 2377 y(B)g(&)g(E)g(&)g(C)g(\\\\)803
2438 y(&)g(D)g(&)712 2498 y(\\endpsmatrix)712 2558 y($)p 591
2594 544 2 v 646 2625 a Fh(7)662 2640 y Fg(Not)10 b(to)g(be)g(confused)e
(with)i(the)g Fd(nput)g Fg(parameter)n(.)591 2828 y Fp(Mathematical)g
(diagrams)f(and)h(graphs)733 b(25)p eop
%%Trailer
end
userdict /end-hook known{end-hook}if
%%EOF