The Next group is function expressions, which give a result as a number like EX1.
EX1: 2*5 + 13 – 8/4
In EX2 you want to calculate the value of IND1 to the power of 2 then divided by 4.
EX2: ( IND1 ^ 2 ) / 4
In the second part of EX3, you see that we have used the value of an indicator, it means absolute value of the difference between MA1 and MA2 which is related to 7 candles ago.
EX3: MathEXP[0.1] – MathABS[MA1[7]-MA2[7]]