On Tue, 27 Mar 2012 14:54:05 -0700 (PDT) Darrell Anderson &lt;humanreadable(a)yahoo.com&gt; wrote: (Currently catching up after a couple of days preoccupied with other things) What kind of tips do you need, exactly? The perl case for the additional <whatsthis>- enclosed strings in the XML files is fairly straightforward if <whatsthis> is a straight text container with no subelements: just slurp the entire file into a single string, run $file =~ s/(\<whatsthis\>.*?\b)KDE(.*?\<\/whatsthis\>)/$1TDE$2/gs; across it a few times (running it only once may not catch cases where a single whatsthis element contains multiple KDEs), and spit the result back into the file. Or something like that. The above will alter freestanding instances of "KDE" and those at the beginning of another word, but should leave it alone if it's in the middle or at the end, and will handle the case where the whatsthis element is split across multiple lines. To do a case- insensitive replace, add an i right before the semicolon at the end of the line. I can probably come up with similar stuff for your other two cases given a couple of samples of each (location in the git repository plus line numbers works).