INT 21 u - LAN Manager Enhanced DOS - LOCAL NetRemoteCopy
        AX = 5F4Ah
        DS:DX -> NetRemoteCopy parameter structure
Return: CF clear if successful
        CF set on error
            AX = error code
SeeAlso: AX=5F4Bh

Format of NetRemoteCopy parameter structure:
Offset  Size    Description
 00h    DWORD   -> source name as UNC
 04h    DWORD   -> destination name as UNC
 08h    DWORD   -> source password
 0Ch    DWORD   -> destination password
 10h    WORD    destination open bitmap
                if destination path exists
                    0000h open fails
                    0001h file is appended
                    0002h file is overwritten
                if destination path doesn't exist
                    0000h open fails
                    0010h file is created
 12h    WORD    copy control bitmap (see below)
 14h    DWORD   -> copy_info buffer
 18h    WORD    length of copy_info buffer

Bitfields for copy control:
 bit 0  destination must be a file
 bit 1  destination must be a directory
 bit 2  destination is opened in ascii mode instead of binary
 bit 3  source is opened in ascii mode instead of binary
 bit 4  verify all write operations

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