I've noticed that some of the modules' summaries  can not be seen in the listing on the backdropcms.org. I assume there is a requirement for a number of symbols for the first paragraph in modules Readme.md that is used then as a brief info about the module. Do you know the requirement for shaping up the readme or where can I read about them?

Accepted answer

There is a module template at https://github.com/backdrop-contrib/module_template/blob/main/README.md?plain=1, including the following information about the first README paragraph:

The first paragraph of this file should be kept short as it will be used as the
project summary on BackdropCMS.org. Aim for about 240 characters (three lines at 80 characters each).

Comments

Ah, thank you very much! I totally forgot there is a template with an explanation...