Each <head>, (heading), indicates either the main title of a work, or its internal sections.
It can contain any text or numbering required, and can be inserted at different points in the document.
If it is the first tag within a <div>, it will be used to automatically add entries in the table of contents of each document. Therefore, all the <div> sections into which we divide our edition and which we want to appear in the table of contents must include a <head> as the first tag immediately after the opening <div> and prior to the rest of the divisions, paragraphs or verses contained in it:
<div n="3" type="book" xml:id="grc.3"> <head>Liber tertius</head> <div type="chapter" n="4" xml:id="grc.3.4"> <head>3.4</head> <div type="section" n="1" xml:id="grc.3.4.1"> <p>Κάδμος δὲ ἀποθανοῦσαν θάψας Τηλέφασσαν, ὑπὸ Θρᾳκῶν ξενισθείς, ἦλθεν εἰς Δελφοὺς περὶ τῆς Εὐρώπης πυνθανόμενος. ὁ δὲ θεὸς εἶπε περὶ μὲν Εὐρώπης μὴ πολυπραγμονεῖν, χρῆσθαι δὲ καθοδηγῷ βοΐ, καὶ πόλιν κτίζειν ἔνθα ἂν αὕτη τοιοῦτον λαβὼν χρησμὸν διὰ Φωκέων ἐπορεύετο, εἶτα … </p> </div> <div type="section" n="2" xml:id="grc.3.4.2"> <p> ... Contents ... </p> </div> … Resto de secciones del capítulo 3.4 … </div> </div>
As each <head> is always included inside a <div>, and these are nested, it is not necessary to indicate the heading level that each one has, as this is assumed from the nesting level of its <div>.
There will be occasions when the main title of the work will be part of the edition itself, so it will be necessary to insert it in an initial <div> separate from the rest of the divisions of the work, with a @type="title" attribute and an @xml:id with language prefix and unique identifier (cf. Alignment of original text and translations):
<div type="title" xml:id="la.title"> <head>Phoenissae</head> </div>
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