HP-71B Custom Key Definitions to save lots of keystrokes

[Garth Wilson]

...and don't forget there are three different kinds of key assignments, and you can have as many KEYS files as you want and swap them out for different situations, and have a different overlay for each.

Related, there's INLINE in the CUSTUTIL LEX file from HP which gives vastly enhanced input capability. It allows you to determine the cursor position and type, which keys terminate and which one did so you can conditionally act on the particular key, and more.