\environment luatex-style

\startcomponent luatex-registers

\startchapter[title=Topics]

    \placeregister[topicindex]

\stopchapter

\startchapter[title=Primitives]

    This register contains the primitives that are mentioned in the manual. There
    are of course many more primitives. The \LUATEX\ primitives are typeset in
    bold. The primitives from \PDFTEX\ are not supported that way but mentioned
    anyway.

    \placeregister[primitiveindex][indicator=no]

\stopchapter

\startchapter[title=Callbacks]

    \placeregister[callbackindex]

\stopchapter

\startchapter[title=Nodes]

    This register contains the nodes that are known to \LUATEX. The primary nodes
    are in bold, whatsits that are determined by their subtype are normal. The
    names prefixed by \type {pdf_} are backend specific.

    \placeregister[nodeindex]

\stopchapter

\startchapter[title=Libraries]

    This register contains the functions available in libraries. Not all functions
    are documented, for instance because they can be experimental or obsolete.

    \placeregister[libraryindex]

\stopchapter

\stopcomponent