How to show/hide a series of poligons.

Support Basics & Interface
1

I understand that to hide/show objects in Object Mode, one needs to click on the Visible Layers wide rectangles to toggle the layers.


But how so I toggle the visibility of polygons in Edit Mode?

2

H to hide selected polygons, Alt H to unhide them
or
Alt B --> drag selection rectangle over part of the mesh to be isolated, Alt B to undo again.