Lim*YRefTrace

This is a Data Header variable.  

Type = String

In Limit Lines, if Lim*YRef is Relative to Trace Reference, Lim*YRefTrace indicates the name of the variable that contains the Y Reference.

The '*' in Lim*YRefTrace indicates the limit line number, the first limit line being 1 (i.e. Lim1YRefTrace, Lim2YRefTrace and so on).