Add additional disclaimer to "diffstat"s.

diff --git a/doc/filesys.texi b/doc/filesys.texi
index 9f06510b114e972fb3046ab5e25ffbeb32f9cebf..e724d96ed7d2223fdfbd8e924bd6d2986e19b7e7 100644 (file)
--- a/doc/filesys.texi
+++ b/doc/filesys.texi
@@ -312,10 +312,16 @@ 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.
 
-This summary is relative to the Pintos base code, but we started from
-the reference solution to project 3.  Thus, the reference solution runs
-with virtual memory enabled.  @xref{Project 3 FAQ}, for the summary
-of project 3.
+This summary is relative to the Pintos base code, but the reference
+solution for project 4 is based on the reference solution to project 3.
+Thus, the reference solution runs with virtual memory enabled.
+@xref{Project 3 FAQ}, for the summary of project 3.
+
+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
  Makefile.build       |    5 

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 ++++++++++++++++++

diff --git a/doc/userprog.texi b/doc/userprog.texi
index b7d356ff0790b13b639ea1072429decc78e324dc..75123849b0622bcd7aa312a462cba104a36761de 100644 (file)
--- a/doc/userprog.texi
+++ b/doc/userprog.texi
@@ -799,6 +799,12 @@ 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
  threads/thread.c     |   13 
  threads/thread.h     |   26 +

diff --git a/doc/vm.texi b/doc/vm.texi
index 544701a5b90844f24588e3d5d7dadc81d0244ec9..8ea6ee46b8c37b6897df3ddd365ed9428c731d1e 100644 (file)
--- a/doc/vm.texi
+++ b/doc/vm.texi
@@ -580,9 +580,15 @@ 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.
 
-This summary is relative to the Pintos base code, but we started from
-the reference solution to project 2.  @xref{Project 2 FAQ}, for the
-summary of project 2.
+This summary is relative to the Pintos base code, but the reference
+solution for project 3 starts from the reference solution to project 2.
+@xref{Project 2 FAQ}, for the summary of project 2.
+
+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
  Makefile.build       |    4