ISP Information:
DOS, Windows, and, to a lesser extent, UNIX and Linux use the last three characters of a filename, after a period, to signify what type of file a file is, such as text, movie, sound, etc. The MacOS has a file system that contains an identifier for file types that is invisible when looking at the filename, and allows you to call files whatever you want without a messy extension on the end. Some common examples are: .exe (
ISP Glossary:
File Extension - Instead of changing the Digest over to an advrtising supported forum,I have always elected to keep it as a user supported forum, and forthe most part keep it spam and virus free. I am *only* able to do thisbecause of financial support from readers here, and if you wouldrather not see these messages every month, then please pitch in andhelp now and then! Consider it sort of like public radio, which goeson for days at a time trying to raise money ... and maybe I shouldadopt the same system. Turn over the entire Digest once or twice ayear to fund raising (entire issues, etc) and stop doing it when thebudget for the year has been raised. But for now, I will stick withthe present system of devoting a few messages at the end of eachmonth to raising money for the Digest publication expenses. Out of400-500 messages per month, in a spam, virus free environment, twoor three (only) devoted to fund raising. You know who you are; pleaseprovide some help here financially.You can use Pay Pal to donate with a credit/debit card by going to ourweb site http://telecom-digest.org and at the bottom of the home pagelook for the PayPal 'donate' button. Or if you prefer, send a checkor money order to Patrick Townson/TELECOM, Post Office Box 50,Independence, Kansas 67301-0050. The amount you send is entirely upto you. You know best how much you can afford and whether or not thisDigest has any value for you. Thank you very much.Patrick Townson, Editor/PublisherTELECOM Digest
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