-Object Pascal, Bourne Shell, Scheme, Haskell,
-Matlab, Python, PHP, Common Lisp.<br />
-Basic Knowledge: Prolog, Ruby, Lua.
+C (since 1992, active use and good knowledge), Perl (since 1996, active use
+and excellent knowledge), C++ (since 1992, a lot of experience but
+incomplete knowledge), Bourne Shell/Bash (since 1996, good knowledge
+and good mastery), Python (since about 2002 - good knowledge but
+<b>Studied out of interest:</b> Basic, Object Pascal, Scheme, Matlab,
+Common Lips, Haskell, Prolog<br />
+<b>Weak Knowledge:</b> Java, Ruby, Lua, PHP.