Document (globalcampus.site/namespace.stxt): Chapter 5: Documents With Namespace
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		Title: STXT: The Book
		
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	Assert: Everything explained for documents without a namespace applies, except for multiline nodes.
	
	Content:
		As a summary of the previous:
		
		* UTF-8 Encoding Always
		* Identifiers are CASE-INSENSITIVE
		* There are no escape characters
		* In @STxT@, all lines that start with the character # are comments
		* 4 spaces are equivalent to one tab
		
	Assert: The use of `:` for multiline nodes is not allowed.\
		This is implicit due to the node type.

	Content: 
		If the `:` character is inserted, it will simply become part of the text, not considered special. The other text types do not allow multiple lines, so it will have no effect.
		
	Header: Namespace Definition
	
	Content:
		A namespace is a document without a namespace with the first node called `Namespace`,
		which is a structure with all the possible node types, as an example.
		
	Assert: 
		A node is defined only once, and it cannot be redefined afterward.\
		It is allowed to appear earlier as long as the structure is not defined.
			
	Content: 
		Let's look at an example:
		
	Code:
		Namespace: www.demo.com/document.stxt
			Document:
	        	Title: (1)
	        	***Sections: (?)***
	        	Description: (1) TEXT
	        	Document Type: (1) ENUM
	        		:report
	        		:article
	        		:essay
        		
	    	***Sections:***
    	    	***Section: (+) TEXT***
	
	Content: A simpler way to define it would have been:
	
	Code:
		Namespace: www.demo.com/document.stxt
			Document:
	        	Title: (1)
	        	***Sections: (?)***
	        		***Section: (+) TEXT***
	        	Description: (1) TEXT
	        	Document Type: (1) ENUM
	        		:report
	        		:article
	        		:essay

	Content: Finally, a document from the namespace:
	
	Code:
		Document (www.demo.com/document.stxt):
		    Title: First simple document
		    Description:
		    	This is the
		    	first simple document.
		    	It has multiple lines
		    Document Type: report
		    Sections:
		    	Section: This is a section
		    	Section:
		    		This is a section
		    		with more than one
		    		line.

	Subheader: Quantity Definition
	
	Content: 
		It is allowed to define the quantity of nodes as follows:
		
		* `?`: May or may not appear (maximum 1)
		* `+`: At least one node
		* `*`: Any number of nodes
		* `num+`: _num_ or more nodes
		* `num-`: _num_ or fewer nodes
		* `num`: exactly _num_ nodes
	
	Subheader: Node Types
	
	Content: 
		The following node types are allowed:
	
	    * `STRING` (Default value)
		* `TEXT` (allows multiline, does not allow child nodes)
	    * `NUMBER`: /^(\-|\+)?\d+(\.\d+(e(\-|\+)?\d+)?/
	    * `BOOLEAN`: true | false
	    * `REGEX`: valid regex
	    * `ENUM`: Valid values are shown in the following multilines
	    * `DATE`: YYYY-MM-DD
	    * `TIMESTAMP`: ISO_8601
	    * `EMAIL`: valid email
	    * `URL`: valid url
	    * `HEXADECIMAL` (allows multiline, does not allow child nodes)
	    * `BASE64` (allows multiline, does not allow child nodes)
	    * `EMPTY`: does not allow content
	    * `INTEGER`: (+|-)?\d+
	    * `NATURAL`: \d+