Hi Sabrina,
Word doesn't really have a graphics editing tool to do that. You can create a freeform line autoshape to cover/conceal a line or
part of that and group that with the picture, but you'll probably have more success in opening the graphic in a graphic editing
program to modify it.
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How do I erase or paint out unwanted lines of a graphic that I have inserted
into a Word document?>>
--
Bob Buckland ?

MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*