Here's a custom keymap for WRQ's Reflection X, which tries to make the keyboard work more like an HP terminal (or, in some cases, like Reflection terminal emulator). Why? Because the PC keyboard is missing important HP keys like "Clear to end of line", Insert Line, etc.

Things it has different:

Alt I is "insert line". (keycode: 0x1000ff70)
Alt D is "Delete line". (keycode: 0x1000ff71)
Alt J is "clear to end of memory". (keycode: CLEAR)
Alt K is "clear to end of line". (keycode: 0x1000ff6f)
F9 is "toggle user-function-key display". (keycode: MENU)
F10 is (I forget) (keycode: 0x1000ff6c)
F11 is "show service keys (e.g, MODES)". (keycode: 0x1000ff6d)
F12 is "show user-function keys". (keycode: 0x1000ff6e)