To write the Alphabetic actions element (A2) in the index.

§1. This element is a simple three-column table.

void AlphabeticElement::render?Usage of AlphabeticElement::render:
The Periodic Table - §3(OUTPUT_STREAM, localisation_dictionary *LD) {
    inter_tree *I = InterpretIndex::get_tree();
    tree_inventory *inv = Synoptic::inv(I);
    TreeLists::sort(inv->action_nodes, AlphabeticElement::alphabetical_order);

    HTML::begin_html_table(OUT, NULL, FALSE, 0, 0, 0, 0, 0);
    HTML::first_html_column(OUT, 0);
    AlphabeticElement::column(OUT, I"ActionColumn", LD);
    HTML::next_html_column(OUT, 0);
    AlphabeticElement::column(OUT, I"NounColumn", LD);
    HTML::next_html_column(OUT, 0);
    AlphabeticElement::column(OUT, I"SecondColumn", LD);
    HTML::end_html_row(OUT);
    for (int i=0; i<TreeLists::len(inv->action_nodes); i++) {
        inter_package *an_pack = Inter::Package::defined_by_frame(inv->action_nodes->list[i].node);
        inter_ti oow = Metadata::read_optional_numeric(an_pack, I"^out_of_world");
        inter_ti requires_light = Metadata::read_numeric(an_pack, I"^requires_light");
        inter_ti can_have_noun = Metadata::read_numeric(an_pack, I"^can_have_noun");
        inter_ti can_have_second = Metadata::read_numeric(an_pack, I"^can_have_second");
        inter_ti noun_access = Metadata::read_numeric(an_pack, I"^noun_access");
        inter_ti second_access = Metadata::read_numeric(an_pack, I"^second_access");
        inter_symbol *noun_kind = Metadata::read_symbol(an_pack, I"^noun_kind");
        inter_symbol *second_kind = Metadata::read_symbol(an_pack, I"^second_kind");

        HTML::first_html_column(OUT, 0);
        Action column1.1;
        HTML::next_html_column(OUT, 0);
        Noun column1.2;
        HTML::next_html_column(OUT, 0);
        Second noun column1.3;
        HTML::end_html_row(OUT);
    }
    HTML::end_html_table(OUT);
}

§1.1. Action column1.1 =

    if (oow) HTML::begin_colour(OUT, I"800000");
    WRITE("%S", Metadata::read_optional_textual(an_pack, I"^name"));
    if (oow) HTML::end_colour(OUT);
    IndexUtilities::detail_link(OUT, "A", i, TRUE);
    if (requires_light) AlphabeticElement::note(OUT, I"Light", LD);

• This code is used in §1.

§1.2. Noun column1.2 =

    if (can_have_noun == 0) {
        WRITE("—");
    } else {
        if (noun_access == REQUIRES_ACCESS) AlphabeticElement::note(OUT, I"Touchable", LD);
        if (noun_access == REQUIRES_POSSESSION) AlphabeticElement::note(OUT, I"Carried", LD);
        WRITE("<b>");
        IndexUtilities::kind_name(OUT, Inter::Packages::container(noun_kind->definition), FALSE, FALSE);
        WRITE("</b>");
    }

• This code is used in §1.

§1.3. Second noun column1.3 =

    if (can_have_second == 0) {
        WRITE("—");
    } else {
        if (second_access == REQUIRES_ACCESS) AlphabeticElement::note(OUT, I"Touchable", LD);
        if (second_access == REQUIRES_POSSESSION) AlphabeticElement::note(OUT, I"Carried", LD);
        WRITE("<b>");
        IndexUtilities::kind_name(OUT, Inter::Packages::container(second_kind->definition), FALSE, FALSE);
        WRITE("</b>");
    }

• This code is used in §1.

§2.

void AlphabeticElement::column?Usage of AlphabeticElement::column:
§1(OUTPUT_STREAM, text_stream *key, localisation_dictionary *LD) {
    TEMPORARY_TEXT(full)
    WRITE_TO(full, "Index.Elements.A2.%S", key);
    WRITE("<b>");
    Localisation::write_0(OUT, LD, full);
    WRITE("</b> ");
    DISCARD_TEXT(full)
}

§3.

void AlphabeticElement::note?Usage of AlphabeticElement::note:
§1.1, §1.2, §1.3(OUTPUT_STREAM, text_stream *key, localisation_dictionary *LD) {
    TEMPORARY_TEXT(full)
    WRITE_TO(full, "Index.Elements.A2.%S", key);
    WRITE("<i>");
    Localisation::write_0(OUT, LD, full);
    WRITE("</i> ");
    DISCARD_TEXT(full)
}

§4. This comparison function sorts actions in alphabetical order of name; by default the inventory would have them in declaration order.

int AlphabeticElement::alphabetical_order?Usage of AlphabeticElement::alphabetical_order:
§1(const void *ent1, const void *ent2) {
    itl_entry *E1 = (itl_entry *) ent1;
    itl_entry *E2 = (itl_entry *) ent2;
    if (E1 == E2) return 0;
    inter_tree_node *P1 = E1->node;
    inter_tree_node *P2 = E2->node;
    inter_package *an1_pack = Inter::Package::defined_by_frame(P1);
    inter_package *an2_pack = Inter::Package::defined_by_frame(P2);
    text_stream *an1_name = Metadata::read_optional_textual(an1_pack, I"^name");
    text_stream *an2_name = Metadata::read_optional_textual(an2_pack, I"^name");
    return Str::cmp(an1_name, an2_name);
}