Selections can be hidden and unhidden for the purpose of greater clarity while creating, editing or presenting a design. To help with this, the Visibility group, Start tab contains the items Hide Selection, Hide Others and Unhide.
Any modifications to a design which you make will only apply to the visible elements. All hidden objects are excluded from the modification process.
Clicking on this button hides all objects currently selected in your drawing.
By using the Hide Others item you can hide all objects in your drawing which are not currently selected.
Unhide has the effect of making any hidden objects in the design visible.