Crazy colored brackets in InDesign data merge document

Question

I did a data merge on an InDesign document I'm working on and I got all these crazy colored brackets embedded throughout my document. Here's a screenshot:
What the heck is going on?

Answer 1

From Post 4:
//EN_UntagAllXMLElements_ACTIVE_DOCUMENT.jsx
//Authors:
//Hans Haesler
//Gregor Fellenz
//Comments by Uwe Laubender
* @@@BUILDINFO@@@ EN_UntagAllXMLElements_ACTIVE_DOCUMENT.jsx !Version! Sun Dec 01 2013 09:38:21 GMT+0100
//See: http://www.hilfdirselbst.ch/gforum/gforum.cgi?post=506568#506568
//Data for testing: http://www.hilfdirselbst.ch/gforum/gforum.cgi?do=post_attachment;postatt_id=6654;
//Posted the links to this thread in InDesign Scripting forum:
//http://forums.adobe.com/message/4983121#4983121
//Green4ever
//"Untag Frame" menu action is invalid [CS5 Win XP]
//The active document:
var d=app.documents[0];
//Hans Haesler:
//Untag all XML-Tags with exception of the root element:
d.xmlElements[0].xmlElements.everyItem().untag();
//TO GET RID OF THE ROOT ELEMENT:
//Workaround by Gregor Fellenz:
//Add a new rectangle to the document:
var tempRect = d.rectangles.add();
//Tag the rectangle with the "Root" element:
tempRect.markup(d.xmlElements[0]);
//AND HERE IS TRICK:
//Remove the rectangle:
tempRect.remove();