[texhax] Solution to my question

Michael Barr mbarr at math.mcgill.ca
Fri Dec 23 15:04:02 CET 2005

Mike Doob's solution cannot be used in the preamble; even $\null$ leads to
a no begin{document} error.  However the following works and ought not
disturb anything since even the loading of the box is confined to a group:

{\setbox0=\hbox{$\null$}}
\newdimen\axis \axis=\fontdimen22\textfont2

Michael Barr