Got a 100 meg xml file that needs some properties set to read only? Here we go. (Sorry for the image, this version of joomla doesn't support all the escaped xml)
Using jEdit's search and replace function, (with the regex box checked) you can take the raw input
Oh and don't forget you'll probably need to up your heap space on big files for jedit (when using a jar file the -jar option must be last which means your memory setting must be first!):
java -Xmx1024m -jar jedit.jar