A useful feature that is especially useful for "longer" pages. ocmod script "Back to top".
Open and edit the "install.xml" file - type an asterisk in the name of your custom template and then save.
Installation is simple using the extension installer and subsequent refresh of the modification. The add-on has no settings and works automatically. If you need to change the background color, do so before installation.

Demo (live e-shop, please do not perform any actions):