int mkdir(folder [parent])
folder - name of new folder. If parent isn't used or is "", folder must be full path.
parent - container folder or drive. If folder includes full path, parent isn't used. Default: "".
If parent folder does not exist, it is also created.
If the folder does not already exist, creates, and returns 1. If new folder cannot be created, generates error. If the folder already exists, does nothing, and returns 0.
mkdir "$Desktop$\New Folder" ;;create "Nef Folder" on the desktop mkdir "New Folder" "$Desktop$" ;;the same