Linq 'into' keyword confusion

Question

I was looking at a co-workers Linq query, shown below (the query executes correctly):

from ea in EquipmentApplication
join erl in EquipmentRoutingLocation on         


        

Answer 1

When used with the select keyword, into will end the scope.
When used with the join keyword, into will add a variable containing all of the matching items from the join. (This is called a Group Join)