I don't remember the details, but the function key shortcuts changed enough between WP4.2 and 5.1 to slow me down. May have been the first time I grumbled about

I don't remember the details, but the function key shortcuts changed enough between WP4.2 and 5.1 to slow me down. May have been the first time I grumbled about a SW update breaking my workflow. Some things never change.