The Ogmo Editor, developed by Matt Thorson, is an open-source program that can be used as a generic level-editor when designing 2D games. The level data can be saved in various XML formats that can subsequently be processed by code in a game engine. While experimenting with the application, initially it was not obvious to me how one is supposed to move the Camera box in the level editor, and a web search didn’t find much documentation. So, I looked at the code (ah, the wonder of open-source software) and found the solution: the user must hold down the C-key while clicking in the main editing window (well, I would never have guessed that). Now I have a list of the hotkeys/keyboard-shortcuts that may be useful to others also, which can be found below.