Subcase Information Entry The MODTRAK command can be used to control mode tracking.


MODTRAK = option


Argument Options Description
option <ON, OFF, blank>
ON or blank
Mode tracking is active.
OFF (Default)
Mode tracking is not active.


  1. MODTRAK entry is only valid for normal modes subcases.
  2. If a MODTRAK entry is present in the input, then PARAM, MODETRAK is ignored.
  3. Positive integers are accepted as option, and are interpreted as ON.
  4. Negative integers or 0 are not accepted as an option and will result in an error termination.