HP Prime Graphing Calculator - Manual (Page 50)

46 Getting started
Online Help
Press W to open the online help. The help initially
provided is context-sensitive, that is, it is always about the
current view and its menu items.
For example, to get help on the Function app, press
I ,
select Function, and press W .
From within the help system, tapping displays a
hierarchical directory of all the help topics. You can
navigate through the directory to other help topics, or use
the search facility to quickly find a topic. You can find help
on any key, view, or command.