I was reading the usage notes for von on this Wiktionary page, where it talks about situations where using von instead of the genitive is obligatory, optional, and colloquial.

For the most part, I understand that von can be used in most cases colloquially, and I understand the first case where von is obligatory, but I am having trouble understanding the remark about personal and singular pronouns. I had even more trouble understanding the section on circumstances where von is optional, i.e. both the use of the genitive and of von are correct German. I'm not sure what it means by "applicative genitive form." It seems like someone copied this chunk from somewhere because it refers to "lemmas" which are not present on the wiktionary page.

Could someone explain (better than the wiktionary usage notes) when "von" is obligatory, optional, and colloquial?

I saw  Replacing the genitive with a "von" construction, but it doesn't really go into detail.

I was reading the usage notes for von on this Wiktionary page, where it talks about situations where using von instead of the genitive is obligatory, optional, and colloquial.

For the most part, I understand that von can be used in most cases colloquially, and I understand the first case where von is obligatory, but I am having trouble understanding the remark about personal and singular pronouns.

I had even more trouble understanding the section on circumstances where von is optional, i.e. both the use of the genitive and of von are correct German.

I'm not sure what it means by "applicative genitive form." It seems like someone copied this chunk from somewhere because it refers to "lemmas" which are not present on the wiktionary page.

Could someone explain (better than the wiktionary usage notes) when "von" is obligatory, optional, and colloquial?

I saw  Replacing the genitive with a "von" construction, but it doesn't really go into detail.