Some features:

* cut/copy/paste as child/paste as prev/paste as next/ of xml elements
* xml element/attributes search
* multi docs edition
* several editing views can be opened on the same document
* drag and drop based copy/cut/past of xml elements
* edition of xml elements and attributes can be made directly on the tree
* namespace support
* on-demand validation
* graphical error reporting. parse/validation time errors reported
graphically.
* when validation is switched on, mlview proposes an elements/attributes
completion feature. when an element is added to the tree, mlview also add
the children elements required by the dtd for the document to be valid.
* validation can be switched off. the xml document editon can then be done
without any constraint.