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The dvipaste program was first described in the article
HI-TeX Cutting & Pasting
in TUGboat, Volume 10 (1989), No. 2, pages 164--165. Consult this article
for further details. (``TUGboat, The Communications of the TeX Users Group'',
is published by TeX Users Group, P. O. Box 9506, Providence, RI 02940.)
The dvipaste program is designed to produce files that conform to the TeX
specifications for .dvi files, even though they may actually be too big to be
produced with normal implementations of TeX (because of limitations on memory
size). More particularly, it allows the material appearing on individual
pages of a `secondary' file to be inserted into a `main' file.
The `secondary' file, say `extra.tex', should be of the form
\input dvipaste
\input <macro packages>
<define a control sequence, say \csq, to stand for a complicated object>
or
<store some complicated object in a TeX box, say in \box0 >
\sendout{\csq} or \sendout{\box0 }
<store another object>
\sendout{...}
. . .
\end
The main file, say `big.tex', should have
\input dvipaste
at the beginning, and then
\paste{extra}{<number>}
at any point, to indicate that the material on page <number> of `extra.dvi'
is to be pasted in at that point.
The secondary file `extra.tex' must be TeX'ed before the main file, because
the \paste commands use information from a file `extra.dat' that is created
when the secondary file is TeX'ed.
When the main file is TeX'ed, blank spaces of the proper size will appear at
the points where the \paste commands were placed. After using the dvipaste
program,
dvipaste big
the new big.dvi file will actually have the proper material from the
secondary file pasted in, and will give the desired result when printed out.
[You can also type
dvipaste big newbig
if you want to save the big.dvi file, and create a new .dvi file, newbig.dvi.
(With TeXtures you MUST choose a new name, because TeXtures won't allow you
to make a TeXtures document out of a different big.dvi when the first one
already exists as a resource to big.tex.)]
The dvipaste.tex macro package will not allow both a \sendout and a \paste to
occur in the same file, so that a file must be used either as a main file or
as a secondary file. However, an arbitrary number of secondary files can be
used in a main file, and the <number>'s appearing in \paste commands do not
have to be consecutive.
* * *
The lamstex.tex macro package essentially includes the part of the
dvipaste.tex macro packages that is used to make \paste be defined.
The lamstbl.tex macro package essentially includes the part of the
dvipaste.tex macro package that is used to make \sendout be defined.
However, \sendout is never actually used in LamS-TeX because an \endtable in
a LamS-TeX tables file essentially does the \sendout.
* * *
One possible use for dvipaste.tex is for files produced by PiCTeX. The
.dvi files that PiCTeX produces for a figure are often so large that
although the figure alone can be printed, it cannot be combined with other
text on that page, because TeX doesn't have enough memory to store such a
large .dvi file (especially when it has to store all the macros being
used). For such situations, one could create a secondary file for the
pictures,
\input dvipaste
\input pictex
<store a picture in a box or a control sequence>
\sendout{the picture}
. . .
and then \paste the pictures into the main file at the appropriate point.
This should be applicable with LamS-TeX also. The secondary file, say
`pictures.tex', should be treated as an ordinary TeX file, NOT as a LamS-TeX
file (if the pictures include some text, new fonts can be introduced after
the \input pictex line, if necessary). Then in the main LamS-TeX file,
\paste{pictures}{<number>}
can be inserted at any point. For example, you might use such a \paste
instead of an \hbyw{...}{...} construction in a \figure ... \endfigure.
* * * * * *
EXAMPLE OF THE USE OF DVIPASTE
The files boxes1.tex, boxes2.tex, and join.tex all begin with
\input dvipaste
and illustrate the general use of the dvipaste program. To see it action,
(1) First do
tex boxes1
and
tex boxes2
This will produce boxes1.dvi and boxes2.dvi, which you can print or view,
as well as boxes1.dat and boxes2.dat.
(2) Then, once boxes1.dat and boxes2.dat have been produced, do
tex join
producing join.dvi, which you can print or view.
(3) Finally, do
dvipaste join newjoin
to produce a newjoin.dvi. When you view or print this, the boxes will have
been pasted in.
(4) You can also simply do
dvipaste join
if you want the old join.dvi to be replaced by a new one, with the boxes
pasted in (not possible with TeXtures).
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