The other day I had to talk to a Force 10 Networks switch, and I typed "help" at the IOS-like CLI prompt. I got this back:

Special keys:
  DEL, BS .... delete previous character
  Ctrl-A  .... go to beginning of line
  Ctrl-E  .... go to end of line
  Ctrl-F  .... go forward one character
  Ctrl-B  .... go backward one character
  Ctrl-D  .... delete current character
  Ctrl-U, X .. delete to beginning of line
  Ctrl-K  .... delete to end of line
  Ctrl-W  .... delete previous word
  Ctrl-T  .... transpose previous character
  Ctrl-P  .... go to previous line in history buffer
  Ctrl-R  .... rewrites or pastes the line
  Ctrl-N  .... go to next line in history buffer
  Ctrl-Y  .... print last deleted character
  Ctrl-Q  .... enables serial flow
  Ctrl-S  .... disables serial flow
  Ctrl-Z  .... return to root command prompt
  Tab,  command-line completion
  Exit    .... go to next lower command prompt
  ?       .... list choices

Except for the history related stuff, this is a good list of the "standard" control codes that you should expect to be supported by a modern interactive shell. Unfortunately, much of this knowledge is spread over several standards, so most people tend to pick it up by word of mouth when they work in a multiplatform environment. For example, most of the movement commands can be found in the Bash manual, C-s and C-q come from ASCII, C-z comes from Cisco IOS's use of the DOS convention (which in turn is DOS trying to play nice with CP/M), and the DEL and BS mess is familiar to anyone who's used Linux for a while.

I had to write the server side of a terminal implementation for an embedded system once, and it was a pain in the ass trying to find references for all these control codes I've picked up over the years. It's nice to see them all in one place for a change.