documentation of autoconf macros

[Vincent Torri]

Hey,

i'm usually using that doc:

http://www.gnu.org/software/autoconf/manual/autoconf.html

when I'm writing autofoo stuff. But there is no mention of the first 
version of autoconf when a macro appeared, and it sometimes annoyes me as 
I don't know which version of autoconf I have to request (the projects i'm 
working on can be run on old OS)

is there a plan to add such informations in the documentation ?

thank you

Vincent Torri