+The function
+.B sel_force
+will sometimes be useful while a
+.B sel_select
+call (see below) is in progress. It marks a file selector as being
+ready even if it's not really. This is most useful when dynamically
+adding a write selector: it's likely that the write will succeed
+immediately, so it's worth trying. This will only work properly if
+the write is non-blocking.
+.PP