Hi,
I'm using this plugin for reference handling.
When I go to the part of documentation related to the "Cite Summary Macro" I can see that, in the image, to go back to the part of the page that the reference refers to you can click on an upwards arrow "↑", while trying it, all the links are represented by "1".
To clarify I attach the image of the links in the documentation:

Here is how they are shown in my case:

Is there some specific setting to select for showing the arrows instead of the 1s?
The server version I'm using is 7.9.0.
Thanks in advance.