I guess that is what they are called. I've looked at many articles about this and "inline link" seems to be the most used.
I want to add a link to text in a narrative panel - not external with a url - but to another section in the Storymap. I tried Adam Pfister's article about adding "inline-index-" using the numerical index of the sections but have had no luck getting that to work. I haven't been able to find anything else on this.