News and Mail transfer require that a binary attachment is "encoded" before it is sent. And they are "decoded" after they have been received. Normally all this is done by your newsreader (or mail-program). You donít see it. Most donít even know it. yEnc files are formatted in a coding system that is up to 40% smaller than UUencode and Base64, and also include error checking and multipart file support. This means that posts are smaller, and take less time to download.
yEnc Format Files - Finishing Up with yEnc (Page 5 of 5 )
yEnc format is a standard encoding used on the Usenet that is easy to use if the right tools are utilized. The debate goes on about whether or not yEnc is good for the Usenet, especially from Outlook Express users who canít decode yEnc. Decoding yEnc varies from reader to reader, but usually you have to select the file(s) and select the decode button. You can find out more about yEnc by reading the various web sites and news groups on the subject.
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