Looking at the instructions for editing from the manual, I see this:
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What does “to contract” mean?
I opened a project and tried it. I put my cursor in the waveform. If the project was “at rest” (not playing), nothing happened when I pressed Cntl+Shft and a left or right key. My cursor stayed where it was. My play button does change it’s appearance while the the CNTL or SHFT are pressed. They have different appearances.
I pressed CNTL + SHFT and used the mouse to highlight an area. On “play” it played just the selection.
I can get the same effect by making a start point, dragging to an end point, and hitting play.
What am I missing?