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Many SolveWare solutions use the Control-O inverse IN condition feature to deactivate rules. The use of inverse IN conditions greatly simplifies rule deactivation.
Inverse IN conditions are indicated by a "Not" symbol (Ø or !) prefixed to the condition. For example: !CTO-IFB060E-HANDLED
A rule defined with an inverse IN condition is inactive when its IN condition does exist and active when its IN condition does not exist. For more details, see the rule parameters chapter of the Control-O User Guide.
It is also possible to use a standard (non-inverse) prerequisite IN condition to deactivate rules. Such a rule is inactive when its IN condition does not exist and active when its IN condition does exist. However, before implementing such a rule, the required IN condition must be added manually in order to activate the rule for the first time.
For this reason, SolveWare solutions use inverse IN conditions that do not require adding the condition manually before implementing the rule.
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