((p "An attribute is represented by a single cell." " " "The first element of the cell references the attribute key, the second value the corresponding value.") (div (@ (class . "syntax")) (p (em "AttributeKeyValue") " " (strong "=") " " (kbd "(") " " (em "AttributeKey") " " (kbd ".") " " (em "AttributeValue") " " (kbd ")") ".")) (p (em "AttributeKey") " and " (em "AttributeValue") " are " (a (@ (href . "00001012930500")) "string values") ".") (p "An empty key denotes the generic attribute.") (p "A key with the value " (kbd "\"-\"") " specifies the default attribute." " " "In this case, the attribute value is not interpreted.") (p "Some examples:") (ul (li (kbd "()") " represents the absence of attributes,") (li (kbd "((\"-\" . \"\"))") " represent the default attribute,") (li (kbd "((\"-\" . \"\") (\"\" . \"syntax\"))") " adds the generic attribute with the value " (@L (@H "“") "syntax" (@H "”")) ",") (li (kbd "((\"lang\" . \"en\"))") " denotes the attribute key " (@L (@H "“") "lang" (@H "”")) " with a value " (@L (@H "“") "en" (@H "”")) ".")))