Add Example: Scheduling via Event Attribute

[tajmone]

The ALAN Manual sections on Event Attributes and SCHEDULE Statement both mention that an attribute of event type can be used as references in the Schedule and Cancel statements, but no practical example is given.

• In Event Attributes, add a small example on how to use an event attribute to Schedule an Event.

  • Add an anchor ID to the example.

• In SCHEDULE Statement, add a cross reference to the above example inside the INFO admonition block:

  The event can be specified by giving an event identifier or referring to an attribute of Event type.

  by adding (see example in <<XREF>>)