This is a simple executable that cuts page spreads in half. So a PDF with a page size of 17x11 will result in 2 PDF pages of 8.5 x 11.
CutPageSpreads.exe <filename1.pdf>
The first argument is the input file name. The default output file will be named "cut_.pdf".
CutPageSpreads.exe <filename1.pdf> <filename2.pdf>
The first argument is the input file name. The second argument is the output file name.
If you drag and drop a PDF file on the executable, it will pass in the filename as the input file and create the default output file of "cut_.pdf".