Board Thread:Support Requests - Designing Your Wiki/@comment-31944763-20170511122638/@comment-168424-20170522174730

Umm... where did you get the  parameter idea from?

If you want to limit the discussions feed to, let's say, 3 items (looks like 3 is the minimum)...
 * ...change:
 * ...to:

See Help:Discussions_activity_feed for things you can change.