mui.DoMethod(id, "Insert", pos, column1$, ...)
The insert position is specified in the "pos" argument. The new entry will be added in front of the entry specified by "pos". This can be an absolute index position starting at 0 for the first entry or one of the following special values:
Top
Active
Sorted
Bottom
If "pos" is bigger or equal to the number of entries in the list, it's
treated like Bottom
.
All entries you insert using this method can use text formatting codes. See Text formatting codes for details.