Show all categories

Hello,

I see that for the pages that terraclassifieds set up upon install that there are shortcodes for all of them. It does not seem to make up a categories page with a shortcode. I wonder if you could give me a hint on how to show all categories by using a shortcode. Sorry, I am not using your theme and widgets will not work as I need it on a page.

Thanks for any help you can give.

Gary