As in any programming language, it is good practice to include comments in PyXPlot command scripts to explain what each command or block of commands is doing. Comment lines should begin with a hash character, as in the example
# This is a comment
Comments may also be placed on the same line as commands, as in the example
set nokey # I'll have no key on _my_ plot
In both cases, all of the characters following the hash character are ignored.