Publisher how to achieve styled "callout blocks" for a book

[matri]

Hello, first time Affinity user here!

I need help understanding how to achieve something that imho should be pretty straightforward for a publishing software, buy I can't find anything on the web.

I'm trying to learn how to build a programming book, and I need help with how to the proper styling.

In every book like this I'll always find these special paragraphs, like N.B., warning, etc. that have an icon and the title of the type of the paragraph.

This is something that I found is called "Callout blocks" in web markdown, but I can't find how are these called in publishing.

Here are some examples (also requests for different software, to better understand what I'm trying to achieve):

https://tex.stackexchange.com/questions/8493/how-to-mark-book-paragraphs-as-note-warning-tip-etc

 

I'd like to easily use these styles here and there, without having to reposition the icon every single time. I thought that paragraph decoration was the right direction, but that only achieve the background or some line.

If Publisher doesn't offer this feature, can you suggest some software that does?

[loukash]

24 minutes ago, matri said:

I thought that paragraph decoration was the right direction, but that only achieve the background or some line.

It is the right direction. Note that the default popout menu is labeled "Decoration 1", and next to it is a + button. It means you can stack as many decoration "layers" to a paragraph (and paragraph style) as you like, multiple lines and multiple backgrounds, each with different attributes.

The only major downer is the linear gradient mode: you can only have a straight horizontal linear gradient because there's no angle field to adjust the direction.