[1] ''IronDoc febase.h'' <http://www.treedragon.com/ged/irondoc/febase.htm#fe_box>
で使われている媒体型。

[FIG[
[4] 
,[CODE(MIME)@en[[[x-ferrum-menu/cell]]]]
,[CODE(MIME)@en[[[x-ferrum-menu/map]]]]
,[CODE(MIME)@en[[[x-ferrum-menu/prop]]]]
]FIG]

[EG[
[3] 例:
-
[PRE[
Content-Type: x-ferrum-menu/cell ; seq=x-ferrum-hot-uids
Content-transfer-encoding: x-ferrum-uids
]PRE]
-
[PRE[
Content-Type: x-ferrum-menu/prop ; seq=x-ferrum-hot-uids
Content-transfer-encoding: x-ferrum-uids
]PRE]
-
[PRE[
Content-Type: x-ferrum-menu/map ; seq=x-ferrum-uids
Content-transfer-encoding: x-ferrum-uids
]PRE]
]EG]

[2] 姉妹媒体型 : [CODE(MIME)[[[x-ferrum-head]]]]