How do you edit an existing hyperlink within a document ?

Ctrl+ Home for positioning in the insertion point to :

To indent an entire paragraph or block of text (not just the first line), you should move your cursor to the block off text you wish to indent and :

In print preview mode by default :

Which keyboard shortcut centers selected text ?

suppose you place the inertion point in the middle of a paragraph and start typing. But the new text deletes the existing text. What’s the problem?