Release 10.1A: OpenEdge Development:
ADM Reference

addContextFields

Adds fields to the list of fields that are used to keep context for the next request.

Location: webrep.p

Parameters:

INPUT pcNewContextFields AS CHARACTER

List of new URL parameters to add to the list.

Returns: LOGICAL

Notes:

The Property should be used whenever the HTML page needs to store the context.
The Embedded SpeedScript templates already do this on all the URLs that are generated.