Localisation¶

The optional vhyl-en.t module provides English message text and grammatical presentation. Core actions choose message IDs and entities; the language module turns those into prose. A host may omit the English module and use IDs to select its own text, audio or other presentation.

Declare Message objects for application lines, with stable id values and literal text or a computed say(command) implementation. Higher-priority active messages can replace a library message. Keep translated display text separate from verb codes, entity identities and conversation/choice IDs.

The generated message catalogue describes the core/English defaults. Dynamic conversation labels and application messages are declared by their owning program; this catalogue is not a complete list of every event a world can emit.

Parser limitation: English command grammar remains in vhyl.t. Replacing vhyl-en.t changes presentation; it does not automatically translate the parser's command syntax or vocabulary. Structured-action hosts can use their own interface language without calling that parser.

Message parameter expansion is a supported subset, not a complete implementation of another library's localisation system. Test agreement, substitutions, missing keys and custom-message precedence with the actual compiled world.