Z:gnu-www-ja-stallman-mec-india--f5ac4d-Even when a patent is rather n/en

Even when a patent is rather narrow, avoiding it can be very hard. The PostScript specification includes LZW compression, which we in our implementation of postScript cannot implement. We support another kind of compression in some sense that is not correct, even though it does the useful job. So, even a narrow patent is not always feasible to avoid.