I agree completely with Tim: I use 'man' (or 'info' for gfortran & the like) all the time - but then I'm a die-hard command-liner/shell-scripter who never uses ccp4i! I haven't got around to installing 6.4 yet but if & when I do & I find the man pages missing as Tim says I'll probably copy over the ones from 6.3 - even though they're maybe now a bit out of date, it's better than no man pages! ... or maybe better would be something like:
alias manc 'less $CDOC/\!^.doc'
(assuming of course the .doc files aren't also missing).
Cheers