Are there any man pages for AFNI programs?
No. The closest thing is that most programs take the command line switch “-help”, which will print out some information on the usage. We try to keep this information up-to-date (unlike the manuals, which are updated on a time-available basis, which means hardly ever). For larger scale issues that aren’t covered in the manuals, there are also the myriad README.* files, and, of course, this FAQ list.
