Fixed spelling
Cleaned up delegate invocation
XPathRepository value is now cleared when switching to another window.
Revert "XPathRepository value is now cleared when switching to another window."

This reverts commit 23a83df58248a255a0f68618761c47cd89a6a122.
Method renamed for clarity.
Renamed "Save" to "Copy".
Attribute matching now requires line number, to allow matching when an XML element is formatted over several lines.