[GAP Forum] The command "IsIdentical" can not work.

[Chiang-En Chen]

My GAP version is 4.6.5. When I performed the command   "IsIdentical( 1, 1
);" (this is an example in the section 27.10 of the manual ), it can not
work. The information of error is

gap>  IsIdentical( 1, 1 );
Error, Variable: 'IsIdentical' must have a value
not in any function at line 1 of *stdin*

Thank for reading.