Decrement Loop End for Row ⌥⌘-

Shorten the length of the loop. This command will wait for me to dive in to step sequencing again.

Logic Pro Step Sequencer overview — Apple Support

Using edit modes, you can control different attributes of the note or event triggered by a step. Some edit modes apply to only one row type, while others are common to both types. For note rows, you can change the velocity, pitch, gate time, number of note repetitions in a step, and other attributes. For automation rows, you can change the value of the automated parameter. Edit modes common to both row types include skipping and tying steps, changing the loop start and end point, and changing the step rate

  Insert Section at Playhead (Global)    ⌃⌘V

Pastes the region on the clipboard into the current track. All tracks (regions) have time inserted.

Add or remove gaps in a Logic Pro arrangement — Apple Support

Sometimes you may want to remove an entire passage from a project—for example, you may want to remove the regions of all tracks between bars 17 and 20, so that all regions (and bar changes, tempo changes, and global score symbols) from bar 21 on are moved four bars to the left, closing the gap left by removing the four bars.

  Recall Screenset 8x    ⇧8

Switch to screensets 80 through 89. I wondered about having 99 screensets available. I realized that a show or a film or even an album can have many, different sections. Using screensets is an interesting way to bookmark and preserve the state of a work.

Create and recall screensets in Logic Pro — Apple Support

You don’t need to save screensets with an explicit command. It happens automatically, as soon as you switch to another screenset. Thus, without any effort, your current working view is always stored as the current screenset.

  Previous Screenset

Switch to the previous screenset. Previous means “current screenset minus one”. Next screenset means “current screenset plus one”.

I would like to be able to jump back to the most recently used screenset, but that’s just me.

Create and recall screensets in Logic Pro — Apple Support

Note: Screensets 1 to 9 can be recalled by freely defined key commands, not only the number keys on your computer keyboard. This allows you to use the number keys for other purposes, such as opening or closing windows. The 1 to 9 key commands are called Recall Screenset 1–9 in the Key Commands window.

  Paste Steps    ⌥⇧V

Paste the steps (on the clipboard) onto the current row. The contextual menu for the row has the copy/paste commands in it, available when there is something to be pasted, dimmed if not.

I used Opcode Vision and Studio Vision back in the late 1980s. At some point I should re-visit step sequencing with the incredible array of instruments I now can carry in my tool bag.

Edit Step Sequencer steps in Logic Pro — Apple Support

You can copy a step, including all of its step settings. When you paste a copied step, the destination row should be of the same row type (note or automation) as the source row. All step settings are copied, with one exception: If the step rate was not edited for that individual step (that is, if it still uses the pattern or row step rate), the pasted step inherits the step rate of the step that it replaces.