When this extension is enabled (the default), the Irie Pascal compiler will recognize a number of operators which are not a part of Standard (ISO/IEC 7185) Pascal, and it will allow some of the boolean operators to be used to perform bitwise operations. The new operators are:
and_then, or_else, xor, shl, shr
The boolean operators that can perform bitwise operations are:
not, and, or
See the Irie Pascal Programmer's Reference Manual for more information.