To navigate from an entry in the changelist to the source code
  1. In the Version Control Tool Window, expand a changelist and select the desired entry.
  2. On the context menu of the selection, choose Jump to Source, or press ⌘↓, F4, ⌘↓ or F4F4 or F4F3 or F3F4, F4 or F4F4, F4 or F4.