Dio-tools is a small extension for the browser game grepolis. It offers, among other things, some displays (Biremes counter, unit strength...), a smiley selection box for text input fields, trade options and some changes to the layout. Almost each feature can be deactivated in the settings.
Opening the "DIO-TOOLS-David1327" settings page, this is done with the settings button on the right sidebar of the game's main page, we can see the existence of 9 different tabs, each of which provides several modules that can be enabled or disabled. according to your need.