--- a/emacs.rst	Fri Feb 18 16:32:50 2011 +0200
+++ b/emacs.rst	Fri Feb 18 16:32:57 2011 +0200
@@ -129,7 +129,8 @@
 ** elp.el.
 
 Enter a prefix for 'M-x elp-instrument-package', perform action and see result
-by 'M-x elp-results'.
+by 'M-x elp-results'. To perform new measurement don't forget to run 'M-x
+elp-reset-all'.
 
 * WWW.
 

--- a/gcc.rst	Fri Feb 18 16:32:50 2011 +0200
+++ b/gcc.rst	Fri Feb 18 16:32:57 2011 +0200
@@ -40,3 +40,20 @@
 * Predefined macros.
 
   $ gcc -arch ppc -dM -E - < /dev/null | sort
+
+* Default search path.
+
+  $ echo | gcc -v -x c -E -
+
+  $ gcc -print-search-dirs
+install: ...
+programs: ...
+libraries: ...
+
+  $ ld --verbose | grep SEARCH_DIR
+
+'LIBRARY_PATH' and 'LD_LIBRARY_PATH'
+
+  $ cpp -Wp,-v
+  $ cpp -Wp,-lang-c++,-v
+  $ cpp -x c++ -Wp,-v