The px unit is a pdflatex specific adjustable unit that is 1 bp (big
point = 1/72in) by default. This commit changes the latex renderer to
use bp which is a standard TeX unit equivalent to the default px
value. This change allows .tex files generated by scribble to work
with other latex engines such as xelatex.
http://nwalsh.com/tex/texhelp/Plain.html#dimensionshttp://tex.stackexchange.com/questions/41370/what-are-the-possible-dimensions-sizes-units-latex-understands
Here is a small test of using scribble and xelatex:
$ cat try.scrbl
@(require scriblib/figure redex/reduction-semantics redex/pict)
@(define-language L)
@(render-term L (term 1))
$ scribble --latex try.scrbl ; xelatex try