You can write online help to describe your commands for users.
Once you understand how a command (*CMD) object can be connected to an online help panel group (*PNLGRP) object, you can move on to actually writing the help text that goes into the four types of help modules for a command. iSeries™ online help for commands is written in a tag language known as UIM (user interface manager). The UIM source is compiled using the Create Panel Group (CRTPNLGRP) command to create a *PNLGRP object.