How to remove selection in adobe illustrator

Question

Adobe Illustrator

How to remove the selected area in Adobe Illustrator, otherwise, when saving a document in pdf, only the selected area is saved.

Answer 1

This is a document field (page, artboard - you can create several of them). Edited by SHIFT+O . If in this mode you click on the border of an object (a white sheet, in your case), then a new artboard will be created with the size of this object