OrderSend()

 
The "comment" parameter is annotated with:
comment - Order comment text. Last part of the comment may be changed by server.

What does this mean? Can the EA rely on using the value of this parameter for later comparisons (like the name of the EA for example for ensuring that the EA only manages it's own orders)?
 
Server can close your orders by stoploss and takeprofit and adds postfix [sl] or [tp] (see discussion "MQL4: How to know a order is closed by stoploss or takeprofit?")

Order can be closed partially. In this case server changes comment.

Broker can manually change comments.
 
Thank you Slawa.
Reason: