HowTo: The BlogWriter tool
http://howto.opml.org/dave/editorOpmlOrg/blogWriterTool.html
Yes, there is a scripting language in there (Scripting News)
http://www.scripting.com/stories/2007/04/04/yesThereIsAScriptingLangua.html
"Yes, of course -- it's running in Frontier, which was GPL'd in 2004. It's got the full environment, the object database, scripting, verb set, TCP support, web server, CMS, etc."
GEEKS.OPML.ORG :
http://geeks.opml.org/2006/05/24#a877
"Ever wonder what the OPML Editor (or Radio or Frontier) is doing in the background?"
OPML Editor support:
http://support.opml.org/2005/07/18
"suppose you have the OPML Editor (or compatible, someday there will probably be compatibles) installed on more than one machine. When you set up the second copy, you want to have all your public files installed there too."