I've looked and looked but have never found a keyboard shortcut once
I'm in the layers view and have selected a layer. I have to
right-click and choose Rename.
Is there any keyboard shortcut instead?
No. Right click and Rename or double left click for the properties
dialog and rename both work in all of the versions that I have. Single
left clicking on the name itself works in newer versions.
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Are we having fun yet?