1 1 7.32 '.fail EXPRESSION' 1 ======================= 1 1 Generates an error or a warning. If the value of the EXPRESSION is 500 1 or more, 'as' will print a warning message. If the value is less than 1 500, 'as' will print an error message. The message will include the 1 value of EXPRESSION. This can occasionally be useful inside complex 1 nested macros or conditional assembly. 1