+| % | eHeaderOnly | nhdr | oNlyHeader | we will just be sending headers. for the Wire protocol only.
+| % | eFormatType | type | type | type of citadel message: (Wire protocol only)
+| | | | | FMT\_CITADEL 0 Citadel vari-format (proprietary)
+| | | | | FMT\_FIXED 1 Fixed format (proprietary)
+| | | | | FMT\_RFC822 4 Standard (headers are in M field)
+| % | eMessagePart | part | emessagePart | *eMessagePart* is the id of this part in the mime hierachy
+| % | eSubFolder | suff | eSubFolder | descend into a mime sub container
+| % | ePevious | pref | ePevious | exit a mime sub container