Install gromit by entering the following commands in the terminal:
sudo apt update sudo apt install gromit
Description:
GTK based tool to make annotations on screen
Gromit enables you to make annotations on your screen. . This is especially useful when making presentations, to highlight things or point out things of interest. . Gromit is XInput-Aware, so if you have a graphic tablet you can draw lines with different strength, color, erase things, etc.
Homepage: http://www.home.unix-ag.org/simon/gromit/
Version: 20041213-9build1
Section: universe/x11