For mac users, sorry suntower, there is an app called KeyCue by ergonis software. A user defined hotkey will display all shortcuts in an active app. The best part is that there is a search window at the bottom which will highlight whatever term you enter, in the categorized list.
Because of Steinberg’s way of implementing them, it doesn’t work off the bat with Wavelab or Cubase, but the developer kindly worked on it over the summer and created custom sets for both (WL9.5 Pro & C9.5) based on defaults (you can modify these to taste).
It looks like he hasn’t posted them on the site with other custom sets, perhaps because there are so many shortcuts it scales the font quite small. I still find it readable (depending on the theme you choose).
If anyone is interested I’m sure he will provide them on request.