How to use DrawerJs
Drawing Lines And Arrows
Select Lines and Arrows from the toolbar.
This will open a dropdown selection showing a simple line, a line with an arrow, and a double-sided arrow.
The cursor turns into a cross with an informational tooltip next to it.
Furthermore, a border color picker and a border style selection will show up at the bottom.
The most recently selected color is already preselected.
Click to start drawing the shape and release the mouse button to finish it.
To change the border of the line or arrow, click on the line button next to Border to open a menu.
Select a border style from the menu.