Base64-encoded item's content. That is HTML as a rule.
@end verbatim
-Each message is placed under @code{HEX(SHA512/2(title+date))} filename.
+Each message is placed under @code{HEX(SHA512/2(title+content))} filename.
Unfortunately many feeds does not provide any date information at all.
Often multiple entries contain the same date. So you can not solely
depend on update/publish date.