gap> SetUserPreference("Pager", "builtin");
gap> ?IsNonExistentKeyWord
Help: no matching entry found
gap> 
gap> # trick: in general, we cannot assume the GAP documentation was built
gap> # prior to running this test; but that of GAPDoc definitely is available
gap> ?MakeGAPDocDoc
Help: Showing `GAPDoc: [22m[34mMakeGAPDocDoc[0m'
gap>  # this gets send to the pager
gap> QUIT;
