improve doxygen output.

Doxyfile

@@ -80,14 +80,14 @@ OUTPUT_LANGUAGE        = English
 # the file and class documentation (similar to JavaDoc). 
 # Set to NO to disable this.
 
-BRIEF_MEMBER_DESC      = YES
+BRIEF_MEMBER_DESC      = NO
 
 # If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend 
 # the brief description of a member or function before the detailed description. 
 # Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the 
 # brief descriptions will be completely suppressed.
 
-REPEAT_BRIEF           = YES
+REPEAT_BRIEF           = NO
 
 # This tag implements a quasi-intelligent brief description abbreviator 
 # that is used to form the text in various listings. Each string 
@@ -209,7 +209,7 @@ ALIASES                =
 # For instance, some of the names that are used will be different. The list 
 # of all members will be omitted, etc.
 
-OPTIMIZE_OUTPUT_FOR_C  = NO
+OPTIMIZE_OUTPUT_FOR_C  = YES
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
 # sources only. Doxygen will then generate output that is more tailored for 
@@ -321,17 +321,17 @@ SYMBOL_CACHE_SIZE      = 0
 # Private class members and static file members will be hidden unless 
 # the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
 
-EXTRACT_ALL            = YES
+EXTRACT_ALL            = NO
 
 # If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
 # will be included in the documentation.
 
-EXTRACT_PRIVATE        = YES
+EXTRACT_PRIVATE        = NO
 
 # If the EXTRACT_STATIC tag is set to YES all static members of a file 
 # will be included in the documentation.
 
-EXTRACT_STATIC         = YES
+EXTRACT_STATIC         = NO
 
 # If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) 
 # defined locally in source files will be included in the documentation. 
@@ -449,7 +449,7 @@ SORT_MEMBERS_CTORS_1ST = NO
 # hierarchy of group names into alphabetical order. If set to NO (the default) 
 # the group names will appear in their defined order.
 
-SORT_GROUP_NAMES       = NO
+SORT_GROUP_NAMES       = YES
 
 # If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be 
 # sorted by fully-qualified names, including namespaces. If set to 
@@ -1124,7 +1124,7 @@ MATHJAX_RELPATH        = http://www.mathjax.org/mathjax
 # typically be disabled. For large projects the javascript based search engine 
 # can be slow, then enabling SERVER_BASED_SEARCH may provide a better solution.
 
-SEARCHENGINE           = NO
+SEARCHENGINE           = YES
 
 # When the SERVER_BASED_SEARCH tag is enabled the search engine will be 
 # implemented using a PHP enabled web server instead of at the web client