The Free One Dynamic String routine deallocates one dynamic
    string.

    Format

      STR$FREE1_DX  string-descriptor

1  –  Corresponding JSB Entry Point

      STR$FREE1_DX_R4

2  –  Returns

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

3  –  Argument

 string-descriptor

    OpenVMS usage:char_string
    type:         character string
    access:       modify
    mechanism:    by descriptor

    Dynamic string descriptor of the dynamic string that STR$FREE1_
    DX deallocates. The string-descriptor argument is the address
    of a descriptor pointing to the string to be deallocated. The
    descriptor's CLASS field is checked.