[document web]
++[section]
++++[math]
++++++[section]
++++++++[section]
++++++++++[static]
++++++++++++[static] name='%F0%9D%90%B4'
++++++++++[static]
++++++++++++[static] name='2'
++++++++[static]
++++++++++[static] name='+'
++++++++[section]
++++++++++[static]
++++++++++++[static] name='%F0%9D%90%B5'
++++++++++[static]
++++++++++++[static] name='2'