Setting up the use of this module.

§1. The following constant exists only in tools which use this module:

define CORE_MODULE TRUE

§2. Like all modules, this one must define a start and end function:

void CoreModule::start(void) {
    core_plugin = PluginManager::new(NULL, I"core", NULL);
    naming_plugin = PluginManager::new(&PL::Naming::start, I"naming",
        core_plugin);
    counting_plugin = PluginManager::new(&PL::Counting::start,
        I"instance counting", core_plugin);
    Writers::register_writer_I('B', &CoreModule::writer);
    CorePreform::set_core_internal_NTIs();
    CoreSyntax::declare_annotations();
}
void CoreModule::end(void) {
}

§3. The main part of Inform contains only two plugins, and one of those ("core") is compulsory anyway:

plugin *core_plugin, *naming_plugin, *counting_plugin;

§4. The %B string escape prints the build number, lying about it when we want to produce predictable output for easier testing.

void CoreModule::writer?Usage of CoreModule::writer:
§2(OUTPUT_STREAM, char *format_string, int wn) {
    if (Time::fixed()) {
        if (wn) WRITE("9Z99");
        else WRITE("Inform 7.99.99");
    } else {
        if (wn) WRITE("[[Build Number]]");
        else WRITE("Inform [[Version Number]]");
    }
}