From what I understand, the current way to modify shortcuts does not cover every shortcuts. In those translation files, we can get:

• Edition modes: edit-edit, edit-wiki, edit-wysiwyg, edit-inline, edit-objects, edit-rights, edit-class
• Actions: delete, rename
• View modes: code
• Doc extra panels: comments, attachments, history, information, annotations
• Edit actions: cancel, backtoedit, preview, save, saveandview
  In a following section, we have developer shortcuts:
• advanced user type
• show hidden docs

If we compare this against the shortcut documentation, these translations leave out the shortcuts:

• Goto modal opened with Ctrl+G (hard-coded key in modalPopup.js)
• Annotation feature shortcuts are hard coded in AnnotationCode > Script.xml