The language#

Meta: the part opener doubles as the mental-model overview — the leading chapter (Design philosophy: principles → omissions → distinctives) plants the seeds so the chapters have hooks to hang things on. Note: an include-section call after a markdown heading nests under that heading, which is why the opener is an include file rather than body headings.

The everyday core: syntax, operators, functions, blocks, control flow, and errors. If you've written any modern scripting language, most of this part is "yes, like that" — the differences are flagged where they bite.