(I know very little about Islam so please keep your answers understandable to those that don't know all the terms.)
I understand that "PBUH" is an abbreviation for "Peace Be Upon Him", which is an honorific to show love and respect to the mentioned persons.
Is this as honorable as fully saying the statement 'Peace Be Upon Him'?
Are there examples of PBUH being used before the internet was here, because it seems like a bit of a shortcut, which to me seems a bit less respectable.
As an example, it would be like a man telling his wife "I love you Susie" from his own heart. Then one day the man wrote the letters "ILYS" on his hand and every time he mentioned his wife's name he'd show her his hand.
Does the Quran state that this kind of abbreviation is equally honoring and respectable?