BUG: Dispalying the * in the window title is not always consistent with whether the file has been modified. (E.g., try middle-click-paste.)

TEST: I am not sure if the output text area is updated whenever needed.

Copyright-related bullshit in the Help menu.

Display the welcome thing when called with no arguments, but do not display anything when file/new clicked.

Translations.

Font selection.

Saving of animated render images.

Syntax highlighting.