Shortcut is a predefined (custom made by you to your requirements) series of event that will happen if certain event happens.
Example: like if I reach market (particular set location on map) a WhatsApp message is being sent to any set contact with exact preset message that I created.
Or
If I reach office my phone gets silent etc.. it can hold multiple changes if any event occurs.
If I get a message from perticular contact…
If I get a call from perticular contact…
If I reach perticular location..
Etc.. this is very much required.