ERROR: The compiler encountered a illegal control character in the specification file. The decimal value of the character is given between the \ \ characters. USER ACTION: Replace the character with the sequence specified in the message (for example, \3\ if the control character's internal value is 3). UIL provides several built-in control characters such as \n and \r for newline and carriage return. Consult the "VMS DECwindows User Interface Language Reference Manual" for a complete list of supported escape sequences.