The AST in Progress routine indicates whether an AST is currently
    in progress.

    Format

      LIB$AST_IN_PROG

1  –  Returns

    OpenVMS usage:boolean
    type:         boolean
    access:       write only
    mechanism:    by value

    Truth value that indicates whether an AST is currently in
    progress (value = 1) or not (value = 0).

2  –  Arguments

    None.