Releases the calling process's association with a common event
    flag cluster.

    Format

      SYS$DACEFC  efn

    C Prototype

      int sys$dacefc  (unsigned int efn);

1  –  Argument

 efn

    OpenVMS usage:ef_number
    type:         longword (unsigned)
    access:       read only
    mechanism:    by value
    Number of any event flag in the common cluster to be
    disassociated. The efn argument is a longword containing this
    number; however, $DACEFC uses only the low-order byte. The number
    must be in the range of 64 through 95 for cluster 2, and 96
    through 127 for cluster 3.