I am authoring some TEI P5 XML in Oxygen and would like to print the Author mode view. However, when i do so there are some overstruck glyphs at the beginning and end of each line, and also at the beginning and end of text between XML tags.  These glyphs are being rendered as boxes or as boxes containing question marks.  Though i've been using other fonts in my editor, i switched to Arial Unicode MS so that i could see what these glyphs are.  One is a curlicue appearing at the lower left of the text, and another is a somewhat 3-like mark appearing at the upper right of the text.  What are these glyphs, why are they appearing, and how do i get rid of them?

Thanks,
Ruchira