@@ -1504,7 +1504,7 @@ generally require permission from the copyright holder to grant explicit
permission to modify a work in any manner. As discussed in the next chapter,
the GPL {\em does} grant such permission, but requires the modified work must
also be licensed under the terms of the GPL (and only GPL:
see\S~\label{GPLv2s6} in this tutorial). Determining whether software was
see\S~\ref{GPLv2s6} in this tutorial). Determining whether software was
modified is a substantially easier analysis than the derivative work
discussions and considerations in this chapter.