Galey

The last update changes my numbers. I now have 0.32% for the 75 two bytes characters version. That fits better.

My second remark was just an addon to your tips and tricks to preserve some space: Using markups costs a lot of space, so use them wisely.

I would also say something about extended charsets: non-ASCII characters are encoded in UTF-8. That can take up to 4 bytes for only one character, depending on the language.
For example, a new mission with a title of 75 'a' gives me a size of 0.25%.
A new mission with a title of 75 'é' gives me a size of 0.28% (2 bytes for each characters).

Ha! And using colors, font size, and the like is also space consuming, since texts are HTML formatted.