for the interface, try something simple et straight forward. Icons have to be self explenatory. Check Twine, their interface is very very much efficient and readable
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sometimes, when I click an icon the proposed function is a bit different than wha I thought it was. Icons have a very precise langage and you are using some that are very common and have everyhere the same meaning to which maybe you should try to stick to. Keep up the good work ! I very impatient to have a full working version of Tuesday