Best free program text editor.

[davetheguru]

look at Codelite (http://www.codelite.org). It is free and probably has more bells and whistles than many especially for use with the Prime, etc. It is a professional grade editor.

It is multi-platform, supports many plug-ins, and can interface with source control programs (subversion, git, etc), debuggers (probably not HP's however).
I wouldn't be surprised if one (especially one of you code wizes) could add in highlighter code for PPL with little effort, if one of the built in ones doesn't fit.

That's my recommendation.