start = element stardict { stardict-content }

stardict-content = 
	element info { info-content } &
	contents-content 

info-content =
	element version { text } &
	element bookname { text } &
	element author { text } &
	element email { text } ? &
	element website { text } ? &
	element description { text } ? &
	element date { text } ? &
	element dicttype { text } ?

contents-content = 
	content-type-attribute ? &
	element contents { contents-content } * &
	element article { article-content } *

article-content =
	content-type-attribute ? &
	element key { key-content } &
	element synonym { synonym-content } * &
	(
		element definition { definition-content } |
		element definition-r { definition-r-content }
	) +

key-content = text

synonym-content = text

definition-content =
	content-type-attribute ? &
	text

definition-r-content =
	element resource { resource-content } +

resource-content =
	attribute type { "img" | "snd" | "vdo" | "att" },
	attribute key { text }

content-type-attribute =
	attribute type { "m" | "g" | "t" | "x" | "y" | "k" | "w" | "h" | "n" }