1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
[ BeginEnv "proposition" , Label "sep_test" , BeginEnv "math" , Variable "X" , Symbol "=" , VisibleBraceL , Variable "x" , Command "in" , Variable "X" , Command "mid" , Variable "x" , Symbol "=" , Variable "x" , VisibleBraceR , EndEnv "math" , Symbol "." , EndEnv "proposition" ]