Re: Trying to Understand Callback(s)

[Anonymous Monk]

When Mojo needs to (say ...) "get a URL," it will "call back" to a subroutine that you provided (within your own application, not Mojo) for that purpose. To accomplish this, you are providing a reference to the particular subroutine within your application that you want to be called. Mojo then calls your subroutine by means of that reference, as other Monks have already shown.