Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
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  Syntax:   .ERR [message]
 
  See also: .ERRE, .ERRB, .ERRDEF, .ERRDIF, Angle Brackets(<>)
 
  Description:
 
     Generates an A2052 error message when assembled. Generally, this
     directive occurs in a conditional-assembly block and is used to
     indicate some error condition discovered at assembly time.
     This directive can be useful for verifying that the program
     assembled correctly and that user-defined bounds were not exceeded.
 
     If <message> is given, it will be displayed with the standard
     assembler error messages. The <message> parameter is any text item
     See: text item
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