@CLIP[n] : Returns line n from the Windows text clipboard. The first line is numbered 0. The string **EOC** is returned for all line numbers beyond the end of the clipboard.
Numeric input may be entered in either decimal format (a sequence of 0-9 digits) or in hexadecimal format ("0x" followed by a sequence of 0-F hex digits).
Examples:
echo %@clip[0]
if "%@clip[2]" eq "**EOC**" echo No more data in the clipboard