Add additional disclaimer to "diffstat"s.

[pintos-anon] / doc / threads.texi

diff --git a/doc/threads.texi b/doc/threads.texi
index 40565994f536bbbec06e7a9beb25ae494cd4a60a..e6e64f14532360ce098fc85670e053d3b4ebcede 100644 (file)
--- a/doc/threads.texi
+++ b/doc/threads.texi
@@ -531,6 +531,12 @@ Here's a summary of our reference solution, produced by the
 @command{diffstat} program.  The final row gives total lines inserted
 and deleted; a changed line counts as both an insertion and a deletion.
 
+The reference solution represents just one possible solution.  Many
+other solutions are also possible and many of those differ greatly from
+the reference solution.  Some excellent solutions may not modify all the
+files modified by the reference solution, and some may modify files not
+modified by the reference solution.
+
 @verbatim
  devices/timer.c       |   42 +++++-
  threads/fixed-point.h |  120 ++++++++++++++++++