Very simply, it automates a couple of tedious tasks. All commands are found in the windows context menu under GTA Tools.
Each option does as follows:
You will also notice an option to make a new YTD file. When clicking on a file, this will create a YTD of the same name. However, when clicking in a folder itself, it will generate a blank YTD file named new.ytd.
I have also included an option to create a new Z3D file in both file and folder context menus.
As always this is not for redistribution, please link back to here.