
ITC stands for  *Interactive Todd Coxeter*, it   is a program  that
allows you to execute interactively single steps and certain strategies 
in an enumeration of
the cosets of   a subgroup of  a finitely  presented group  using  the
graphics surface  XGAP of GAP and thus to  see in various windows
exactly what is happening.

To be able to run ITC it is necessary to have installed the latest 
version of XGAP. As XGAP is only available under Unix, also ITC is only 
available under Unix.


To install ITC, just unpack itc.zoo in the pkg subdirectory
of your GAP installation (or in the pkg subdirectory of any other
GAP root directory) with the following command:

unzoo -x itc.zoo

ITC is then loaded with the GAP command

gap> RequirePackage( "itc" ); 

