A 'Writer' document contains lots of differently formatted 'Math' formulas. How can I harmonize the formats? Can I use one of the formulas as a kind of template?

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Hi Lupp, maybe this extension Formatting of all math formulas can help with the matter.

Thanks @m.a.riosv . It wasn't originally my own problem. I came from https://ask.libreoffice.org/en/questi... where the question concerning formats was conatined under "Rationale". The extension you pointed me to was already mentioned there in an answer by @kompilainenn, but (Don't tell anybody!) I idn't clearly understand it, and I wanted to pursue the "template idea."
Having done so, I wanted to offer the solution to others (but not as an extension, but as "works inprogress with flexibility"), and probably to get interestiung comments on my proposal. Therefore I posted a question stressing the "template", and answered it myself. You may have a glance into my example and find it working.

Sorry I didn't see your idea behind.:)