-This assumes that permissions allow anyone who commits to svn up the
-wiki_src directory and write to wiki_dest. If they don't, you'll need a
-suid wrapper to run the above as a user who can write to both.
+The generated wrapper is a C program that is designed to safely be made
+suid if necessary. It's hardcoded to run ikiwiki with the settings
+specified when you ran --wrapper, and can only be used to update and
+compile that one checkout into the specified html directory.
+
+Depending on your setup, the post-commit hook might end up
+getting called by users who have write access to the repository, but not to
+your wiki checkout and html directory. If so, you can safely make
+the wrapper suid to a user who can write there (*not* to root!). You might
+want to read [[Security]] first.
+
+[[setup]] explains setting this up in more detail.