The user should enable this beforehand by feeding the system what you wanted it to go like. For example, shortcuts like LoL (Laugh Out Loud), OMG (Oh My God), GTG (Gotta Go), BRB (Be Right Back), TTLY (Talk to You Later), etc. are some general shortcuts used by an average user in their daily chatting life. While many can understand them, it’s always good to use the full phrase to make new people learn. Simultaneously, they shouldn’t be a burden to you for filling them in full, thus using the replaceable shortcut is a good way. In Mac, here’s how;
Steps to Use Text Shortcuts on Mac
As said, you should be feeding the system beforehand to make your Mac replace the shortcut words with something that you have pre-set. Here’s how to do it; Typing your shortcut word and hitting Tab or Spacebar should replace the word with a pre-set phrase.