Tim Boykett writes in his e-mail message of 1994/08/17

as a part of a degree, one of the students here has
written a collection of semigroup functions for Gap.
I will include the readme below, anyone can mail me
for a copy, or I will upload it somewhere if there is
some interest.

I suggest that you upload the code together with the readme file to
'ftp://ftp.math.rwth-aachen.de/pub/incoming/'.

Martin.

-- .- .-. - .. -.  .-.. --- ...- . ...  .- -. -. .. -.- .-
Martin Sch"onert,   Martin.Schoenert@Math.RWTH-Aachen.DE,   +49 241 804551
Lehrstuhl D f"ur Mathematik, Templergraben 64, RWTH, 52056 Aachen, Germany