Re: "standard pc?"
I have no idea what that <Ctrl>-<Left Cursor> etc thing means either. In most KSH derivatives beginning of line and end of line are <ctrl>-a or <ctrl>-e, or word at a time forward/backward <esc>-f or <esc-b>.
*edit (before I've even posted* - looks like the latter. Never knew. Then again I'm the type that uses <ctrl>-p instinctively instead of the up arrow.