Press the Big Green Button, or press space, and choose a function. What to type for each function is below. Add(+), Subtract(-), Multiply(*), Divide(/), Factorial(!), Exponent(^), Absolute Value(|) {Not a capital I or lowercase L, it is the Shifted, or Secondary button, of the backslash key}, Sine(sin), Cosine(cos), Tangent(tan), Sigma/Summation Notation(WIP).
If it says that it is not a function, that means it cannot do that function, e.g., I have not added sqroot, so if you insert sqroot symbol, it will say it is not a function, despite it existing. Take as much code as you want, just credit me. !!!!!! If you want to advertise, go ahead, but there are people who will report you for it anyway. If you want, take the risk. !!!!!! Made by Gary.