The load combination generator has the ability to drop an entire load combination or drop out terms from a load combination based on following criteria:

• A combination will be dropped if an error occurs when a factor is solved. For example, a divide by zero error will cause a combination to be dropped.
• A combination can be dropped by using the keyword "Ignore" in either control 2 or 5. If "Ignore" is the value of the selected and the combination includes both dependent load cases, the combination will be dropped.
• A term will be dropped from a combination if it has a factor that evaluates to zero.
• If a combination includes a notional load term and that notional load is not analyzed, the term will be dropped from the combination.