oftheattachment.MostemailclientsmaketheirowndecisionregardlessoftheMIMEspecificationusedhere.https://www.iana.org/assignments/cont-disp
disp:(500,741,3)浮动地面真实视差图,其中每个值描述了左右立体图像中对应像素之间在列方向上的偏移。
typeR_SPARCint const(R_SPARC_NONER_SPARC=0R_SPARC_8R_SPARC=1R_SPARC_16R_SPARC=2R_SPARC_32R_SPARC=3R_SPARC_DISP8R_SPARC
content-disposition="Content-Disposition"":"disposition-type\*(";"disposition-parm)disposition-type="attachment"|disp-extension-tokendisposition-parm