Get rid of superfluous font codes when pasting text

When I paste text, many of the attribute codes are inserted even when the pasted text is already in the same format as the text it's being pasted into. In other words, when I paste a sentence which is in Times New Roman 12 point into a document where the previous and subsequent text has those same attributes, WP repeats the codes. The user manual for WP 2.1 cautioned against unnecessary codes. The manual was right and the program should be changed accordingly.