Annotations is a brand new feature in Power Music4.
Highlight a few bars, select chord charts from the gallery, type instructions in a sticky note - the possibilities are endless!
See this document for a full list of the annotations available.
Annotations are always done in Full Screen mode. You can zoom in for fine detail.
Even chord sheets can be annotated! Chord sheets are typed in the Chord Sheet editor, but in full screen mode you can highlight choruses, place chord diagrams on the screen or even add a url link for a video!
(Annotations on chord sheets are not visible in the 'All Songs' screen.)
Here are some tips for using annotations: