-in the dss source directory to build the dss executable and copy it
-to some directory that is included in your PATH, e.g. to `$HOME/bin`
-or to `/usr/local/bin`.
+in the dss source directory to build the dss executable and the man
+page. If lopsub is installed in a non-standard path, you may need to
+run `make` as follows:
+
+ make CPPFLAGS=-I$HOME/lopsub/include LDFLAGS=-L$HOME/lopsub/lib
+
+Then type
+
+ sudo make install
+
+to install in /usr/local, or
+
+ make install PREFIX=/somewhere/else
+
+to install in /somewhere/else.