The list form of the TRKCALC macro constructs an empty, in-line parameter list. By coding only MF=L, you construct a parameter list, and the actual values can be supplied by the execute form of the TRKCALC macro. Any parameters other than MF=L are ignored.

The format of the list form of the TRKCALC macro is:

>>-+-------+--TRKCALC--MF=L------------------------------------><
   '-label-'