When holding click on an app in the dock it will show a list of all windows open. I have noticed there are different symbols next to each window. It seems that a checkmark indicates the active window. I can't figure out or find information on what the diamonds mean and why some windows do not have a symbol. I would like to know what all the symbols mean.
1 Answer
The tick shows the current foreground window of that app. The lozenges show windows that have been minimized.
The other windows are just other windows.
A black dot indicates that the window has unsaved changes. Less common in Apple's apps, but you still see it on things like Word.
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"The other windows" can be other windows in the background, but also include previously used, but now closed, windows. Often used by document centric apps.– GilbySep 20, 2022 at 23:13