Documentation
From OHRRPGCE-Wiki
In addition to the HOWTO, aimed at new users, and the FAQ, for general inquires, the following documentation and guides are available:
A more organised (but incomplete) documentation of the workings of CUSTOM than the HOWTO.
Keyboard Shortcuts
A quick reference of all the keyboard controls in CUSTOM.
Keyboard controls in OHRRPGCE Games
A quick reference to the controls used when playing games.
Plotscripting Tutorial
A step-by-step guide to writing plotscripts.
Plotscripting Dictionary
Complete listing and explanation of available plotscripting commands. A scan through is recommended to confident new plotscripters to get an idea of what their scripts could do.
(Note: Currently out of date. See the nightly uploaded version for up-to-date documentation (documents current WIP builds, not the last stable release))
HamsterSpeak Specification
Definition of the language in which plotscripts are written, HamsterSpeak. Not aimed at non-programmers.
Source
How to get the source, how to compile it, and a (rather poor) description of where the project is going.
Bugzilla
A list of known bugs and their status.
RPG Format Documentation
Pretty good documentation of the internals of RPG files, for OHR developers.