Idea of Flow Icon
A serial task is shown with many different squares will lines connecting to each each of them. However, in serial tasks there will be one box that will be connected to two different boxes or ideas.
This Flow icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.