The Get Access Name Table for Protected Object Class (by Context)
    routine is a simplified interface to the $GET_SECURITY system
    service, and returns a pointer to the access name table for a
    protected object class that is specified by a context longword
    returned from $GET_SECURITY or $SET_SECURITY.

    Format

      LIB$GET_ACCNAM_BY_CONTEXT  contxt ,accnam

1  –  Returns

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

2  –  Arguments

 contxt

    OpenVMS usage:context
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference

    The address of a nonzero longword context value returned by $GET_
    SECURITY or $SET_SECURITY.

 accnam

    OpenVMS usage:access_names
    type:         longword (unsigned)
    access:       write only
    mechanism:    by reference

    The address of a longword into which this routine writes the
    address of the access name table.