statistics datat types done

latex/environments.tex

@@ -25,6 +25,12 @@
 \definecolor{sec22}{RGB}{210,150,0} 
 \definecolor{sec23}{RGB}{145,105,70} 
 
+\newcommand{\source}[1]{    
+  \begin{flushright}
+    \color{gray}\scriptsize \url{#1}
+  \end{flushright}
+}
+
 \newenvironment<>{emphasize}[1]{%
   \begin{actionenv}#2%
       \def\insertblocktitle{#1}%