I am having trouble adding text to cells in a table. When I left click my
mouse so that I can position a cursor and start pasting in text, instead, all
the text already in the cell becomes highlighted. And if I do click on paste,
it will paste in my new text, but get rid of all the existing text in the
cell.

Finally, if I try to paste the cell onto another word document, it prints it
as plain text, rather than HTML text- it doesn't even look like a cell
anymore.