/sys$common/syshlp/helplib.hlb

/sys$common/syshlp/helplib.hlb
System Services, $DASSGN, Argument
^*Conan The Librarian

 chan

    OpenVMS usage:channel
    type:         word (unsigned)
    access:       read only
    mechanism:    by value
    Number of the I/O channel to be deassigned. The chan argument is
    a word containing this number.

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