single-part $B$KBP$9$kA`:n(B
************************

single-part $B$r:n$k$?$a$NA`:n$K$O0J2<$N$h$&$J$b$N$,$"$j$^$9!#(B

`C-c C-x C-t'
     text part $B$rI=$9(B single-part tag $B$rA^F~$7$^$9!#(B

`C-c C-x C-i'
     file $B$r(B MIME part $B$H$7$FE:IU$7$^$9!#A0$K(B `C-u' $B$rIU$1$?>l9g!">o$K(B
     media-type, subtype $BEy$rJ9$$$FMh$^$9!#(B(cf. *Note tag specification
     for inserted file::)

`C-c C-x C-e'
     external part $B$rA^F~$7$^$9!#(B

`C-c C-x C-v'
     `C-g' $B$,2!$5$l$k$^$GO?2;$r9T$$!"2;@<(B part $B$rA^F~$7$^$9!#!J;HMQ$G$-$J(B
     $B$$>l9g$,$"$j$^$9!K(B

`C-c C-x C-y'
     $B8=:_I=<(Cf$N(B (mail or news) message $B$rA^F~$7$^$9!#!J<B:]$NF0:n$O;HMQ(B
     $B$7$F$$$k(B MUA $B$K0MB8$7$^$9!K(B

`C-c C-x C-m'
     mail message $B$rA^F~$7$^$9!#(B

`C-c C-x C-w, C-c C-x C-s'
     signature $B$rA^F~$7$^$9!#(B

`C-c C-x C-k'
     PGP (See PGP) $B$N8x3+80$rA^F~$7$^$9!#(B

`C-c C-x t'
     $BG$0U$N(B single-part tag $B$rA^F~$7$^$9!#(B