MTB Statements

TRUE

For every source program and usefile that is compiled, Comet sets the following values for the TRUE and FALSE system symbolic constants:

Symbolic constant Value
TRUE 1
FALSE 0

Symbolic constant	Value
TRUE	1
FALSE	0

This is the equivalent of an MTB program using the following directives:

SET TRUE = 1
SET FALSE = 0

Note, however, that these SET directives are not required in an MTB program. Comet defines the TRUE and FALSE symbolic constants automatically.

If you have an existing source program (or usefile) that defines TRUE or FALSE as symbolic constants, you will need to take one of the following steps to avoid getting a compiler error (i.e., error 04 - "variable has been previously defined"):

remove the SET TRUE and SET FALSE directives from your code and rely on the automatic definitions, or
unset the system symbolic constants at the beginning of your source program/usefile, and rely on your program's SET TRUE and SET FALSE directives, as follows:
```
UNSET TRUE
UNSET FALSE
```