formating problem in text

Hi ,

I have a page which contains combination of text and program symbol (e.g program symbol used for material description ). If this material description is large then formating gets disturbed

e.g This is material &desc&

will appear as This is material YYYYYY - if disc is small size

else it will appear as This is material YYYY

YY

How can I protect splitting of description ( I mean program symbol )