Changing snippets for all articles

It would be great if there was a place in the control panel in which it would be possible to edit snippets and this would be reflected in all posts with this snippet

What is the use. Let’s say I want to place the “article sponsor” block in some articles. It will be quite problematic then to bypass all the articles and change the sponsor. It would be more convenient to change it in one place and for the rest of the articles to be updated.

I came to you from Hugo and there this functionality is expressed in Shortcodes, and for me this is an indispensable function.

No need to have adjustable snippets, instead use “placeholders” along with snippets. See the following thread, from Kevin’s comment all the way down.