That would be another poor choice as "mod" is used as "modulo" - there's no need to abbreviate "long" words like "module", because they are not used so often and bringing ugliness and confusion just to save a couple of characters per file is not worthy!
In this case, you don't even need the "fun" keyword as syntax-wise, "=>" alone can be used like in other languages as (parameter1, parameter2) => parameter1 + parameter2, for example - it's obvious enough without having to prefix with anything!
Anyway, I see that you want to be "different" in hopes to be "better", but, indeed, you're just "weird", instead.
"+." for float addition, "^" for concatenation, etc.
"(" <val> ":" <type> ")" instead of the shorter and more readable <val> "as" <type>.
For example, why did you choose "mutable" and not "mut"? See, your language is full of inconsistencies, it's not well-thought, it's not intuitive! For example, you chose "rec", which usually means "record" for "recursive"! In your "for"-loop, you have just "to", not "upto", but then "downto"! A good choice borrowed by some old languages would be to use the optional "by" <step>, which defaults to +1, but in a case of a "downto", would be -1, and thus giving you a more powerful loop!
