Comma splice on p.26

Rev. 788
Ch. 2, § "Closing, maximizing, restoring, and minimizing windows", p. 26 (PDF p. 28)
Type: grammar

Manual has a comma splice (before "however"):
Once minimized the window will no longer be visible, however, its corresponding button in the bottom panel will remain, indicating the program is still running in the background.

A comma could go after "minimized" (if you really like commas), but not before "however": a full stop or semicolon is the appropriate punctuation. Alternatively, "but" could be used as the conjunction:
Once minimized the window will no longer be visible, but its corresponding button in the bottom panel will remain, indicating the program is still running in the background.