Text Editor:
- Cmd-clicking on a class name will take you to the implementation (or header) file of that class, cmd-clicking on an object will take you to where the object is declared.
- Alt-clicking will open a documenation popup for the object you clicked on.
Adding frameworks: You cannot simply do this by right-clicking on the project or a group (like in Xcode 3). You need to go to the project view, select your target and go to "Build Phases" tab. Frameworks can be managed under the "Link Binary with Libraries" section.
Setting target dependencies: Similar to the above, in the "Target Dependencies" section of the "Build Phases" tab.
Keep your archives safe -prior to installing Xcode 4 (from 3). You will lose them (most likely) and with them lose your ability to symbolicate your crash logs.
Delete action-BEWARE: "Delete" (instead of "Remove Reference Only") directly erases the file from your drive. It doesn't go into the Trash, so you cannot recover it.
