File

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−Structure of a stanza:
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−stanza {
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−	--- properties ---
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−	tags -- array of tags
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−	
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−	--- static methods ---
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−	iq(attrs) -- 
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−	
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−	--- read-only methods ---
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−	reply -- return new stanza with attributes of current stanza
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−	child_with_name(string name) -- return the first child of the current tag with the matching name
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−	
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−	--- write methods ---
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−	tag(name, sttrs) -- create a new child of the current tag, and set the child as current
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−	up() -- move to the parent of the current tag
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−	text(string) -- append a new text node to the current tag
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−}