Where is this so-called 'vertical trim'?

As per title.

See screencapture as proof.

There is no ‘vertical trim’ anywhere in your ‘typography’ section.

As there is no search function anywhere on any of this organisation’s platforms and indexing over search is poor at best, it is almost impossible to find any detail covering anything more granular than terms like ‘design’ or ‘figjam’, whatever that is.

So where is it.