+0x222a "" "" "" "\\bigcup" "" # UNION
+0x222b "" "" "" "\\int" "esint" # INTEGRAL
+0x222c "" "" "" "\\iint" "esintoramsmath" # DOUBLE INTEGRAL
+0x222d "" "" "" "\\iiint" "esintoramsmath" # TRIPLE INTEGRAL
+0x222e "" "" "" "\\oint" "esint" # CONTOUR INTEGRAL
+0x222f "" "" "" "\\oiint" "esint" # SURFACE INTEGRAL
+0x2230 "" "" "" "\\oiiint" "txfonts" # VOLUME INTEGRAL
+#0x2231 "" "" "" "" "" # CLOCKWISE INTEGRAL
+0x2232 "" "" "" "\\ointclockwise" "esint" # CLOCKWISE CONTOUR INTEGRAL
+0x2233 "" "" "" "\\ointctrclockwise" "esint" # ANTICLOCKWISE CONTOUR INTEGRAL
+0x2234 "" "" "" "\\therefore" "amssymb" # THEREFORE
+0x2235 "" "" "" "\\because" "amssymb" # BECAUSE