[left click] - create a numbered dot

[right click] - use pencil, insert text

[hold 1 + right click] - start point of additional straight line

[hold 2 + right click] - end point of additional straight line

[delete] - removes all additional details i.e. those created via right clicking

[hold shift] - hover over additional details to erase individually

[move cursor to edge] - hide "latest dot made" highlighter