To set a title pattern match string for a stored window, simply double click on its “Title Match Pattern” column.
Setting a pattern match string for a stored window forces Stay to restore any window with a title that matches the pattern to the size and position of the stored window.
Stay’s pattern matching system uses the ICU regular expression syntax.
Match all windows: .*
Match text anywhere in title: TEXT
Exactly match title: ^TEXT$
Match text at the beginning of the title: ^TEXT
Match text at the end of the title: TEXT$
Match title not containing text: ^(?!.*TEXT).*$
Match Terminal window by ⌘-key: ⌘1