I have a MacBook, and I don't have an F13 or Print Screen key. How do I take a screenshot in StarCraft II? This Q&A didn't help me.
On a Mac, you can take a screenshot in two different ways.
If you want to use Starcraft's in game screenshot functionality, remap the key with Iber's answer, then find the screenshot in
~/Library/Application Support/Blizzard/StarCraft II/Accounts/(SC2 account ID)/(some other folder)/Screenshots/. I don't know what the some other folder's name signifies, as I sourced that information from this blog post and he didn't know either.
You can also use OS X built in screen capture: ⌘ Command+Shift+3 to save it as a png on your desktop. However before you must turn on Mac OS keyboard shortcuts in game options.