Boeing naming convention for 777

Date:         10 Jul 99 02:33:11 
From:         JF Mezei <jfmezei.spamnot@videotron.ca>
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For other aircraft, it seems that Boeing has no problem giving each
derivative its own name.

Why does this seem so different for the 777 where the 200 and 300 will
have many many derivatives.  Why can't Boeing name them the 400, 500 etc
? Is it affraid of running out of numbers prior to the end of this
family ?

It is pretty hard to know what a 777-200 and 777-300 are. I thik there
was the basic model, the IGW model, the ER model, and now an "X" model
to come. Any more I forgot ?

Seems strange that this strange naming convention applies only to the
777.