[[ [CL] means by this "display formatting".]]



[[Explain what's available in [TclDOM] and [tdom].]]

For TclDOM, just use the -indent option.  For example,

dom::serialize $dom -indent yes

The man page [http://tclxml.sf.net/tcldom/2.3/tcldom-man.html] explains
the use of -indent and -indentspec.



[[Explain pretty_print package--application, why not at SF, plans, ...]]
[[License, too.]]
[[Last one CL packaged was
http://www.phaseit.net/claird/comp.lang.tcl/dom_pretty_print/dom_pretty_print-0.2.tar.Z ]]
----
[RS] can't resist to contribute a quite pretty one-liner proc:
 package require tdom
 proc xmlpretty xml {[[dom parse $xml] documentElement] asXML}

 % xmlpretty "<foo a=\"b\"><bar>grill</bar><room/></foo>"
 <foo a="b">
     <bar>grill</bar>
     <room/>
 </foo>

Nicely functional (indenting is default in the ''asXML'' method), it's just that it leaks memory: the document object is never freed. So here is a cleaner, but not so compact version:
 proc xmlpretty xml {
     dom parse $xml mydom
     set res [[$mydom documentElement] asXML]
     $mydom delete
     set res
 } ;# RS








Also see [XML] and
http://software.decisionsoft.com/software/xmlpp.pl