Suppose the first day you used emacs you faced that task. You would look in the menus: Help / Search Documentation / Look Up Subject in User Manual You might t

Suppose the first day you used emacs you faced that task. You would look in the menus: Help / Search Documentation / Look Up Subject in User Manual You might try "definition", but the hits for that aren't programming-related (emacs has a much wider scope of functionality than Visual Studio), so you'd probably go up to the top level of the manual. One of the topics there is "Features for maintaining large programs". That would tell you exactly what you want. In your example you talk about "shortcuts of every other program on my computer". So you're assuming a programmer comfortable with windows. If I take the same liberty and assume a programmer comfortable with Unix, s/he will look in the Tools menu, see "Search Files (Grep)" and have immediate success finding the definition without any use of the emacs help system.