Indentation #Formatting

Tianxin (Viatrix) Zhang

Hi, all.
In my current project, indentations were used in the source text to present a hierarchy of phyla and classes. I wonder if these indentations should be erased still, as the construction guide indicates that indentations should be avoided?
If so, what would be appropriate to present the hierarchy instead?

Delmar Larsen

Can you provide an example page for review?