source

    This required parameter is a keyword or keyword=file-spec value
    specifying the input for the converter. The valid keywords are
    A1, CC, COMMA, DDS, LDAP, LDIF, MSMAIL, and TRUELDIF. In the case
    of CC, COMMA, LDIF, MSMAIL, and TRUELDIF, the keyword takes a
    required file specification value, specifying the name of the
    directory file to use as input.

 destination

    This required parameter is a keyword or keyword=file-spec value
    specifying the output for the converter. The valid keywords are
    A1, CC, COMMA, DB, DDS, LDAP, LDIF, MSMAIL, and TRUELDIF. In the
    case of CC, COMMA, LDIF, MSMAIL, and TRUELDIF, the keyword takes
    a required file specification value, specifying the name of the
    directory file to output.