1)  Single Edge – refers to a slip sheet with only one tab (foldable edge). Below is a photo of a Single Edge Slip Sheet:

2)  Adjacent Edge - refers to the tabs (foldable edges) of a slip sheet being right next to each other.  Below is a photo of an Adjacent Edge Slip Sheet:

3)  Parallel or Opposite Edge - refers to the tabs (foldable edges) of a slip sheet being on opposite sides.  Below is a photo of a Parallel or Opposite Edge Slip Sheet:

4)  Multi-Edge – refers to tabs (foldable edges) of a slip sheet being on at least 3 sides. Below is a photo of a Multi-Edge Slip Sheet: