.ajaxStart() should have info about effects caused by setting global:false in jQuery.ajax

[adamblank]

Pertaining to entry http://api.jquery.com/ajaxStart/

User comment:
"Needs a better, more in-depth example, perhaps showing its use in context of the document, other contexts it may appear in and such."

Upon inspection at dev summit, group noted:
"It's a global event... doesn't need DOM. Should have link to jQuery.ajax noting that setting global:false in that method will cause this method not to fire."