Purpose: Survey the various types of [list]-based representations that are being used for [XML] documents.

**Descriptions**

***[tdom] list format***

The list format used by [tdom] represents a node in a document by a list in one of the forms
    :   ''element-name'' ''attribute-dict'' ''children''
    :   '''#text''' ''text''
    :   '''#cdata''' ''text''
    :   '''#comment''' ''text''
    :   '''#pi''' ''target'' ''text''
(possibly there could be more), where the first two are the most important.
The ''children'' is again a list (possibly empty) of such list representations of nodes. 
The ''attribute-dict'' is a dictionary mapping attribute names to their values, neither of which have any quoting 
of special characters. Similarly, the ''text'' is character data between tags, without any XML-quoting.
'''#pi''' nodes are for XML processing instructions.


***[can2svg] hierarchical list***

Appears similar to the tdom list format, except that there are two extra items in each node:
    :   ''element-name'' ''attribute-dict'' ''isempty'' ''chdata'' ''children''
See [can2svg], particularly the definition of `can2svg::MakeXML`.


***XTL***

[[See http://pdqi.com/w/pw/pdqi/Mod/XTL.]]


**Discussion**


<<categories>> XML | Data Structure