16
votes
4answers
292 views

Scaling a glue in TeX

is there a possibility to scale a glue in TeX? Consider the following example: \newskip\foo \newskip\bar \foo=10pt plus 2pt minus 3pt \bar=2.5\foo\relax \showthe\foo \showthe\bar \bye When ...
5
votes
2answers
41 views

Free - dereference - release - delete a newdimen length?

Somewhat similar to How to erase/delete a counter, I guess, but for \newdimen... So, consider the MWE: \documentclass{standalone} \usepackage{tikz} \begin{document} \begin{tikzpicture} ...
28
votes
2answers
508 views

What is truecm?

In examples found around the web, some people specify lengths such as width=5truecm with \includegraphics or the geometry package. How is this different from regular 5cm?
9
votes
2answers
840 views

What is the plain TeX equivalent of \settowidth?

The \settowidth command, which sets a width equal to the width of some text, is described at Get width of a given text as length and How to set the width of the label of a description to the width of ...
11
votes
2answers
141 views

Does a space belong after pt?

Does a space always belong after pt, e.g. as used in \hskip1pt? If a space is used, are there situations where a space will appear where it is not intended? If no space is used, will pt be ...
21
votes
2answers
646 views

Which is better: a dimension or a macro?

When messing around with TikZ/PGF then I frequently find myself wanting to store a length for later use. By "length" here, I mean the word in its non-TeX meaning. As I'm doing stuff in TikZ/PGF then ...
9
votes
3answers
387 views

Making register declarations local, Undefining a register (count, toks, etc.)

Is it possible to make \newcount, \newtoks, etc. respect grouping, so that, e.g., \newcount\temp\temp=2{\newcount\temp\temp=1}\showthe\temp gives 2 (instead of 0)? Relatedly, is it possible to ...
7
votes
2answers
2k views

How can the dimensions of a box be retrieved with LaTeX

One can specify a box in LaTeX, using various methods for example: \newsavebox{\Abox} \savebox{\Abox}{\parbox{4cm}{\lorem}} \usebox{\Abox} How can I retrieve the width, height and depth of the ...
39
votes
2answers
2k views

Is there a \show for lengths?

The \show command is extremely useful for figuring out what's going on with a particular macro. Similarly, using \the can tell me the value of a counter. I'd like to know if there's something ...