On Mar 03 03:06 +0100, Ingo Schwarze wrote: > > for example, what's a request? > > A request is a command that is built into the the roff language, > somewhat similar to a reserved word in a programming language, > except that it can only occur after a leading dot or apostrophe > at the beginning of an input line. > > > how is it different from a macro? > > A macro is a user-defined command, analoguous to a user-defined > function in a procedural programming language. > > > and why would one want to read the number register. > > That depends on which register; reading and manipulating registers > is most often useful when defining your own macros. > > Yours, > Ingo
thanks, ^that^ and sections 5.5 and 5.6 of groff explained it nicely.
