I'm quite happy to share with flat assembler community a meaningful project I did (in just 2 days).
It is a simple (yet flexible enough) standard I've created, that I have done realizing it into this simple library.

It enables one to do applications with multi language support, and those language files are plain text files, with a simple concept to make them go into your applications.

I've attached everything as it is now at my GitHub project page for it.

To use the library, just copy it as sudo to your system's library path (usually /usr/lib), and use it in your projects.
Detailed usage are in the source, as well as at project's page.

(Warning: translations used by example application are made using Google translator! Don't judge me by them, please, as if it is myself doing, it will be much worse...)

To simplify things a little, I attached the demo application output, including an example of an unsupported locale falling back to 'C' (the fallback locale).