An AsciiDoc document consists of a series of block elements starting with an optional document Header, followed by an optional Preamble, followed by zero or more document Sections.
Almost any combination of zero or more elements constitutes a valid AsciiDoc document: documents can range from a single sentence to a multi-part book.
Block elements consist of one or more lines of text and may contain other block elements.
The AsciiDoc block structure can be informally summarized as follows:
Document ::= (Header?,Preamble?,Section*) Header ::= (Title,(AuthorInfo,RevisionInfo?)?) AuthorInfo ::= (FirstName,(MiddleName?,LastName)?,EmailAddress?) RevisionInfo ::= (RevisionNumber?,RevisionDate,RevisionRemark?) Preamble ::= (SectionBody) Section ::= (Title,SectionBody?,(Section)*) SectionBody ::= ((BlockTitle?,Block)|BlockMacro)+ Block ::= (Paragraph|DelimitedBlock|List|Table) List ::= (BulletedList|NumberedList|LabeledList|CalloutList) BulletedList ::= (ListItem)+ NumberedList ::= (ListItem)+ CalloutList ::= (ListItem)+ LabeledList ::= (ListEntry)+ ListEntry ::= (ListLabel,ListItem) ListLabel ::= (ListTerm+) ListItem ::= (ItemText,(List|ListParagraph|ListContinuation)*)
Where:
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? implies zero or one occurrence, + implies one or more occurrences, * implies zero or more occurrences.
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All block elements are separated by line boundaries.
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BlockId, AttributeEntry and AttributeList block elements (not shown) can occur almost anywhere.
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There are a number of document type and backend specific restrictions imposed on the block syntax.
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The following elements cannot contain blank lines: Header, Title, Paragraph, ItemText.
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A ListParagraph is a Paragraph with its listelement option set.
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A ListContinuation is a list continuation element.
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