diff --git a/Doxyfile b/Doxyfile
index fb2a14fa..0809126a 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -1,4 +1,4 @@
-# Doxyfile 1.3.6-20040222
+# Doxyfile 1.3.7
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project
@@ -32,6 +32,15 @@ PROJECT_NUMBER         =
 
 OUTPUT_DIRECTORY       = 
 
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 
+# 2 levels of 10 sub-directories under the output directory of each output 
+# format and will distribute the generated files over these directories. 
+# Enabling this option can be useful when feeding doxygen a huge amount of source 
+# files, where putting all generated files in the same directory would otherwise 
+# cause performance problems for the file system.
+
+CREATE_SUBDIRS         = NO
+
 # The OUTPUT_LANGUAGE tag is used to specify the language in which all 
 # documentation generated by doxygen is written. Doxygen will use this 
 # information to generate all constant output in the proper language. 
@@ -100,12 +109,21 @@ FULL_PATH_NAMES        = NO
 # If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag 
 # can be used to strip a user-defined part of the path. Stripping is 
 # only done if one of the specified strings matches the left-hand part of 
-# the path. It is allowed to use relative paths in the argument list. 
+# the path. The tag can be used to show relative paths in the file list. 
 # If left blank the directory from which doxygen is run is used as the 
 # path to strip.
 
 STRIP_FROM_PATH        = 
 
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of 
+# the path mentioned in the documentation of a class, which tells 
+# the reader which header file to include in order to use a class. 
+# If left blank only the name of the header file containing the class 
+# definition is used. Otherwise one should specify the include paths that 
+# are normally passed to the compiler using the -I flag.
+
+STRIP_FROM_INC_PATH    = 
+
 # If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter 
 # (but less readable) file names. This can be useful is your file systems 
 # doesn't support long names like on DOS, Mac, or CD-ROM.
@@ -211,6 +229,13 @@ EXTRACT_STATIC         = NO
 
 EXTRACT_LOCAL_CLASSES  = YES
 
+# This flag is only useful for Objective-C code. When set to YES local 
+# methods, which are defined in the implementation section but not in 
+# the interface are included in the documentation. 
+# If set to NO (the default) only methods in the interface are included.
+
+EXTRACT_LOCAL_METHODS  = NO
+
 # If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
 # undocumented members of documented classes, files or namespaces. 
 # If set to NO (the default) these members will be included in the 
@@ -412,7 +437,12 @@ RECURSIVE              = NO
 # excluded from the INPUT source files. This way you can easily exclude a 
 # subdirectory from a directory tree whose root is specified with the INPUT tag.
 
-EXCLUDE                = ../src/getopt_win32.c ../src/getopt_win32.h ../src/localtime.c ../src/private.h ../src/timegm.h ../src/tzfile.h
+EXCLUDE                = ../src/getopt_win32.c \
+                         ../src/getopt_win32.h \
+                         ../src/localtime.c \
+                         ../src/private.h \
+                         ../src/timegm.h \
+                         ../src/tzfile.h
 
 # The EXCLUDE_SYMLINKS tag can be used select whether or not files or directories 
 # that are symbolic links (a Unix filesystem feature) are excluded from the input.