Span
This button in Masonry Designer allows you to choose between 2 build spans (A 'Span' refers to the amount space something covers). In this case Masonry Designer can be set by the Row (entire horizontal row in the wall or by the Unit, or single brick). These selections tell the Masonry Designer what to build your wall with when making a custom design. You can change individual bricks or add a whole row to your wall.
When creating custom designs you will most likely be combining multiple brick colors to make a pattern. In the examples below you will see how you can utilize the different 'Span' tools to make a custom designed wall.
Span: Unit
Span: Row
