An initiator is an object that starts a group.
An identifier is an object that identifies a group.
And could appear anywhere in the group.
They are both required (non -optional) elements if defined.
An initiator can also be an identifier.
Not every identifier is and initiator.
In the above the "A" could be considered the initiator for a certain type of sentance. The "." can be considered an identifier, if every sentance ends with one.
"." also could be the terminator of the sentance.
BocaBurger
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The pen is mightier than the sword, but the sword hurts more!