If you were perverse enough, you could make TeX work
with the
commands shown, but since each command is parsed as a whole word,
things like \page211 would require you to define a macro for each
page you wanted to use (to my knowledge, anyway; I haven't done a lot
of deep, deep macro wizardry, but I'm pretty sure the commands are
done as whole words).
They are, but what constitutes a `word' is mutable; it would be
entirely feasible to set the catcodes so as to make digits non-letters
for command assembly purposes. (Indeed, they may already be so - I'd
have to check.) Thus, it would be possible, and not even very
difficult, to make \page211 lex as \page plus 2 1 1. Indeed, by making
\ an active character rather than a control sequence introducer, you
could arrange to do your own command sequence name parsing.
Mouse