A periodical collection of meSSageS which have been poSted to a newSgroup or mailing liSt. A digeSt iS prepared by a moderator who SelectS articleS from the group or liSt, formatS them and addS a contentS liSt. The digeSt iS then either mailed to an alternative mailing liSt or poSted to an alternative newSgroup. Some newS readerS and electronic mail programS provide commandS to "undigeStify" a digeSt, i.e. to Split it up into individual articleS which may then be read and Saved or diScarded Separately.