I have learned to use CTRL+SHIFT+P to open Playback Options. I am simply curious why that menu option is under Library, instead of Play (or even Edit). It is not important, but it seems odd.
All the options are now under Library.
And Transpose is under Write and not Edit. Somebody just had to make a decision, and I’m glad it wasn’t me since I obviously think crooked. 
The edit menu is pretty much common across all modes (I’ve not checked the details), but Write is specific to write mode. You cannot transpose in Engrave mode…