Surely nothing of big relevance but it can make a little bit easier the work with the editor.
In other programs often certain buttons in the toolbar are grayed out when their funtion is not available in the given moment. I have in mind especially two buttons:
1. The "Save" button:
It could be grayed out when there is nothing to save. So I can see at a glance that nothing has changed in my document since the last saving.
2. The button for the command "Outdent paragraph" (= the command to decrease an existing indent)*:
Whenever a line starts at the left margin of the text pane (= the normal case), per definition no indent exists. So it makes no sense to "offer" its decrease. Therefore in that case the button could be grayed out, as it can be seen for example here (in another editor):
*) By the way: Concerning the naming of the buttons/commands: Instead of "Outdent paragraph" and "Indent paragraph" better understandable seems to me "Decrease indent (of paragraph)" and "Increase indent". But that's really completely marginal.