Release 10.1A: OpenEdge Development:
Progress 4GL Reference

FIRST-COLUMN attribute

A handle to the first column in a browse widget, regardless of the value of its READ-ONLY attribute or its VISIBLE attribute.

Data type: WIDGET-HANDLE

Access: Readable

Applies to: BROWSE widget

After finding the first column, accessing the NEXT-COLUMN attribute of the current column allows you to walk through the browse columns.