This macro is designed for automatic resale of items on the servers where the auction is installed. 

First you need to sell the desired item at auction using the command /ah sell 2000, where 2000 is the number of items for sale. After that, the script is activated.
The script will automatically resell the item every 10 seconds (this time can be configured in it). Thus, the item will be permanently auctioned. 
However, there may be difficulties with moving the mouse, if the script does not work, you should resize the window with Minecraft or change the mouse coordinates in the script itself.