Function generator

May i know what is the purpose of sync output port in the function generator? Im just understand it is used to send a triggering signal to an oscilloscope, but in my assignment for this question is 10 marks? How should i explain? Anyone please give me a hand?

Here's a user manual for the Agilent 33220A 20 MHz Function Generator.

You can learn about the sync output.

Here's another application you can view ... to garner some more information

https://www.youtube.com/watch?v=r1SwXRns_qs