18. The storage device of claim 15 , comprising further computer-executable instructions, which when executed cause the computing device to provide a descriptive annotation of an entry in the changed editor display, the descriptive annotation provided as a comment in a source code-specific format in the source code.
15. A storage device comprising computer-executable instructions which when executed cause a computing device to: display an editor display generated by a source code editor, the editor display based on source code to be edited by the source code editor; trigger execution of extension code based on an occurrence of an event at the editor display, the event associated with the extension code, the extension code being distinct from the source code to be edited and loaded from an external source into the source code editor and executable by the source code editor to determine that the editor display is to be modified and to generate a changed editor display; and display, by the source code editor, the changed editor display.