A proper way to put code before </head> tag

[OZO]

I appreciate your advices, JJoe

While "Merge-O-Matic" works well, it puts new filters only at the beginning of the configuration set. So far I'm not sure that it's the best way to do (and in particular, to suggest to do for others):
1. I prefer to keep filter set organized (in sections). For example, it'd be better to put filter mentioned earlier in section associated with Google. And I have filter set for BBR forum, which I think should be placed within "Site-Specific" section.
2. I'm not confident that order of filters is not important and will not interfere with the way how they may act. Am I worry too much (about nothing, maybe?) here?

For initial testing "Merge-O-Matic" is very helpful though...