gap> 
gap> Read("c:/gap/gap3r4p3/lib/abstab.g");
Error, the file 'c:/gap/gap3r4p3/lib/abstab.g' must exist and be readable in
Read( "c:/gap/gap3r4p3/lib/abstab.g" ) called from
main loop
brk> quit;
gap> Read("c:/gap/Abstab.g");
The record 'descriptions' contains brief descriptions of the functions
in this file.
Functions of importance: MakeAbStabChain, FactorPermGroupElement, Shrink
gap> U:=(1,2,3,4);; D:=(5,6,7,8);; 
gap> R:=(1.2.6.5);; L:=(3,4,8,7);;
Syntax error: ) expected
R:=(1.2.6.5);; L:=(3,4,8,7);;
     ^
gap> F:=(4,1,5,8);; B:=(2,3,7,6);;
gap> G:=Group(U,D,L,R,F,B);;
Error, Variable: 'R' must have a value
gap> R:=(1,2,6,5);; L:=(3,4,8,7);;
gap> F:=(4,1,5,8);; B:=(2,3,7,6);;
gap> G:=Group(U,D,L,R,F,B);;
gap> Size(G);
40320
gap> 
gap> g1:=(1,8);
(1,8)
gap> 9!;
Syntax error: ; expected
9!;
 ^
gap> 9*8*7*6*5*4*3*2;
362880
gap> g2:=FactorPermGroupElement(G,g1);
g5*g2^-1*g5^-1*g2^-1*g5^-1*g3*g2*g3^-1*g2^2*g5^-1*g3*g2*g3^-1*g2*g5*g2^-1*g5^-\
1*g2^-3*g3*g2^-1*g3^-1*g5*g2*g5*g2*g5^-1
gap> g3:=Shrink(G,g2);
g2^-1*g4*g5*g2^-1*g5^-1*g2^-1*g4*g2^2
gap> g4:=Shrink(G,g3);
g2^-1*g4*g2*g5*g2*g3^-1*g1^-2*g3
gap> g5:=Shrink(G,g4);
g2^-1*g4*g2*g5*g2*g3^-1*g1^-2*g3
gap> quit;