To write the Verbs element (Vb) in the index.

§1.

void VerbsElement::render?Usage of VerbsElement::render:
The Periodic Table - §3(OUTPUT_STREAM, localisation_dictionary *LD) {
    HTML_OPEN("p"); WRITE("Verbs listed as \"for saying only\" are values of the kind \"verb\" "
        "and can be used in adaptive text, but they have no meaning to Inform, so "
        "they can't be used in sentences about what's in the story.");
    HTML_CLOSE("p");
    int verb_count = 0;
    inter_lexicon *lexicon = InterpretIndex::get_lexicon();
    for (index_lexicon_entry *lex = lexicon->first; lex; lex = lex->sorted_next)
        if ((lex->part_of_speech == VERB_TLEXE) ||
            (lex->part_of_speech == MVERB_TLEXE) ||
            (lex->part_of_speech == PREP_TLEXE)) {
            text_stream *entry_text = lex->lemma;
            HTML_OPEN_WITH("p", "class=\"hang\"");
            IndexUtilities::anchor_numbered(OUT, 10000+verb_count++);  anchors from 10000: see above
            if (lex->part_of_speech == VERB_TLEXE) WRITE("To <b>%S</b>", entry_text);
            else if (lex->part_of_speech == MVERB_TLEXE) WRITE("To <b>%S</b>", entry_text);
            else if (lex->part_of_speech == PREP_TLEXE) WRITE("To be <b>%S</b>", entry_text);
            else WRITE("To be able to <b>%S</b>", entry_text);
            int at = (int) Metadata::read_optional_numeric(lex->lex_package, I"^at");
            if (at > 0) IndexUtilities::link(OUT, at);
            if (lex->part_of_speech == MVERB_TLEXE) WRITE(" ... for saying only");
            else WRITE(" ... <i>%S</i>", Metadata::read_optional_textual(lex->lex_package, I"^meaning"));
            HTML_CLOSE("p");
            VerbsElement::tabulate_verbs(OUT, lex, I"^present", "present");
            VerbsElement::tabulate_verbs(OUT, lex, I"^past", "past");
            VerbsElement::tabulate_verbs(OUT, lex, I"^present_perfect", "present perfect");
            VerbsElement::tabulate_verbs(OUT, lex, I"^past_perfect", "past perfect");
        }
}

void VerbsElement::tabulate_verbs(OUTPUT_STREAM, index_lexicon_entry *lex, text_stream *key, char *tensename) {
    text_stream *val = Metadata::read_optional_textual(lex->lex_package, key);
    if (Str::len(key) > 0) {
        HTML::open_indented_p(OUT, 2, "tight");
        WRITE("<i>%s:</i>&nbsp;%S", tensename, val);
        HTML_CLOSE("p");
    }
}