You might have noticed that all IBM® Informix® online documentation for version 12.1, 11.7, and 11.5 is now in IBM Knowledge Center. The search functionality of IBM Knowledge Center is significantly better than the search in the information centers, but sometimes it works a bit differently than you might expect.
In IBM Knowledge Center search, the hyphen character means "exclude this term". To include an item that has a hyphen in your search, you must quote it; for example:
"onstat -g ses"
onstat "-g" ses
If you don't quote it, you'll get a helpful "Did you mean: ..." note: