Could've been good- but as Aagam Jain below commented below, the black cursor is _impossible_ to see against black backgrounds! I found another extension (Digital Ruler) that automatically changes the cursor's colour to contrast against the background colour, and that's exactly what is needed. I am uninstalling this extension and going with the other one.

расширение полная ерунда, всплывающие штуки мешают

Does exactly what it says

facil de usar

Can we add color options for the lines as when I am having something in black color the lines are not visible which is not good

it measures. That's all I want

good

excelente facil de usar

It's good

why am i blocked

Çalışmıyor ki kanser oldum ae