Now that we can easily edit the percentage for each sentence it would make sense not to require explicit confirmation after marking a sentence as “mastered” by clicking the “MASTER” button. The same goes for “reset to 0 %”.
This would make it a lot more convenient to master sentences. When doing English from Swedish, I already know most of the sentences, so I do a lot of manual “mastering”, and it is very tedious.
If one should accidentally click the wrong button, the mistake can now easily be corrected by editing the sentence percentage.