Select Subset. Subsets of the Input/Output columns can be set to be used as inputs, outputs or excluded.
The Subset > Select Subset menu command opens the Select Subset dialog. The subsets of columns can then be changed to inputs, outputs or excluded.
The Subset > Add Columns to Subset menu command opens the Add to Subset dialog. The currently selected column is the first of the group of columns to be added to a subset. Columns with names containing specified characters can be added to the other subset at the same time. The subset can be any single letter or number. Columns can be assigned to any number of subsets. The subset names and the column name are separated by \ characters.
The Subset > Remove Column from Subsets menu command removes the currently selected column from all subsets.