Intuition:Catdown-readme-contents/en

The enclosing file $4 lists the images at the $1 category ( $2 )$3.

Instructions for downloading all the listed images

The download time may vary from a few minutes to several hours.

Windows:

Extract all the files in the same folder and run $5
$6

Linux/Mac OS:

Extract all the files and open a terminal in that folder. Run sh $5