I saw for 0.INTRO.txt, i don't find it in the tarball release.
This file really exist?
I think, is name have change, not?
See on http://www.crca.ucsd.edu/~msp/Pd_documentation/x1.htm
" [...]For a list of all the objects you can use in Pd, see the text file, "0.INTRO.txt" in the directory, "../5.reference". [...] "
In this directory, we have " 0_all_guis-INTRO.txt "
Probably documentation are obsolete.
Or, you can find assistance to start pd in 1.manual/1.introduction.txt.
Cordialement, Willy WOLFF.