Apply Transform User Preset 19 to selected Events
This is one of the 30 user transform commands. There are two ways to apply transforms — “Apply Transform” and “Select and Operate”. Looking at the Transform window I see that there are the options to “Select Only”, “Operate Only”, and “Select and Operate”. Sort of like PERL for MIDI events 😉
The best introduction I could find for MIDI Transform Sets is the table that describes the pre-defined transforms. The operations and selection criteria help me to understand what is possible.
Logic Pro MIDI Transform presets overview — Apple Support
The table below describes the operations performed by the MIDI Transform window presets in Logic Pro.
Logic Pro MIDI Transform window overview — Apple Support
The MIDI Transform window is so-named because it transforms MIDI events—based on conditions, operations, and values you choose—into different types of events, or events with different values.
⇧ SHIFT – ⌃ CONTROL – ⌥ OPTION – ⌘ COMMAND