Very useful! Thanks a lot for this.
I have a suggestion. The context menu is displayed on right mouse click. It wouldn't be bad to have context menus (icons) automatically displayed when text is selected, with the option to choose where this context menu is displayed in relation to the position of the selected text (above, below, left, right, delayed) for the sake of other such context menus (e.g. S3 Translator).
Absolutely awesome would be to automatically display this icons context menu even after the text is automatically tagged and searched by typing (a standard Firefox search feature).