1) I have not been able to correctly access the grp library.
I do not get an error message but the machine simply 'freezes'.
For example, I type 'SymmetricGroup(3);' at the 'gap>' prompt
and nothing happens.

In your batch file to run gap, you should specify the library as

-l /lib/

(or whatever). The important thing is to use "/", so that the gap
system can modify the string containing the lib directory to
determine the grp directory.

L.H.Soicher@qmw.ac.uk