Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 28)

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1.6 Always True Contact (ATI)
Use this instruction whenever you need a contact that will always evaluate true. For
example, use it when you are debugging a program and wish to bypass some logic,
but you do not want to delete the original logic.
Using a variable name is optional. However, if one is used, the variable must be a
simple Boolean.
Example of an Always True Contact (ATI)
This rung shows that the state of switch3 has
no affect on the state of motor1 because of the
ATI instruction.