A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Master theme is a theme file – .qxtheme or .css – that has the name of the program and is stored together with it.
Master themes are loaded automatically when the application (= built program) is run and are used to secure its unique appearance as compared to other applications developed for the same company.
Compare: system theme, user theme