text is a tough way to do audio — ⇧ SHIFT — ⌃ CONTROL — ⌥ OPTION — ⌘ COMMAND
New MIDI Instrument
Creates a new MIDI instrument in the environment. Ancient underpinnings like the many tunnels under Manhattan.
Standard instruments in the Logic Pro Environment — Apple Support
Logic Pro provides standard instrument objects to handle MIDI devices that only use one MIDI channel—typically, older synthesizers, MIDI-controlled effect units, or drum machines. Standard instruments transmit MIDI data on a single MIDI channel.
New Arpeggiator
Create a new Arpeggiator object in the MIDI Environment (Logic Pro Environment).
I suspect that I will never use the Arpeggiator in the environment opting to use the Arpeggiator MIDI plugin instead.
Arpeggiators in the Logic Pro Environment — Apple Support
An arpeggiator object turns chords into arpeggios. It plays the currently held notes—individually—in a selectable pattern (up, down, random, and so on), and at a selectable speed that ranges between whole notes and 768th notes.
Use the Arpeggiator in a Logic Pro project — Apple Support
You can use the Arpeggiator MIDI plug-in with the Smart Controls on a software instrument track. When you turn on the Arpeggiator, chords you play on the keyboard are arpeggiated, or played one note at a time rather than simultaneously.
Apply Buffer Template to Position
One of the many commands that are used to build MIDI Environments. It is chronicled in the grimoire of Logic. It is only necessary to know that it is there, how to find it, and to invoke it only in the extreme condition that there is no other way.
Object groups in the Logic Pro Environment — Apple Support
To save time on the definition and alignment of these groups, you can choose (one or more) objects as prototypes (templates) by copying them into the Clipboard. (Choose Edit > Copy.) You can then apply certain characteristics of these template objects to selected objects.
Select Cable Origin ⇧←
Select the starting point of a cable.
Advanced selection commands in the Logic Pro Environment — Apple Support
Select Cable Origin: Highlights the source (or origin) object of a selected cable connection. This is particularly useful for troubleshooting, or when you want to make changes to a number of serially cabled objects (by changing the original).
New Monitor
Creates a new monitor object in the current layer of the MIDI Environment. There is a 32 event limit which seems small, but in reality is certainly enough for almost any command series. SysEX need not apply.
Monitor objects in the Logic Pro Environment — Apple Support
A monitor object displays all events (MIDI and meta) passing through it. It remembers the last 32 events, with the newest events shown at the bottom of the list. You can resize it to show from 1 to 32 events. Clicking anywhere in the body of the monitor clears all events.