/ENCAPSULATE[=keyword[,...]]
       /NOENCAPSULATE[=keyword[,...]]

    For interactive PMDF MAIL sessions, specifies file encapsulation
    defaults for the FORWARD, SEND, and REPLY commands as well as the
    synonymous commands MAIL and ANSWER. The accepted keyword values
    are FORWARD, SEND, REPLY, ALL, and NONE.

    The /ENCAPSULATE qualifier specifies which commands should
    by default encapsulate files as separate attachments; the
    /NOENCAPSULATE qualifier specifies which commands should not
    by default encapsulate files as separate message attachments.
    Specifying /ENCAPSULATE without any qualifiers implies
    /ENCAPSULATE=ALL, and specifying /NOENCAPSULATE without any
    qualifiers implies /ENCAPSULATE=NONE.