All interactions customizable and assignable to shortcuts / MIDI controls

Pretty much any action you can do in REAPER is customizable, assignable to a keyboard shortcut, toolbar button, mouse behavior or MIDI control.

All actions are available in the Action List window:

You can also create macros (called custom actions) to trigger a sequence of actions at once.

Any repetitive set of tasks can be automatized with custom actions.

This is an essential feature of REAPER, which speeds up your workflow.

Create crossfaded loops

Render selected area of tracks