Function Input/Output Parameters

[89578251]

Usage Example (function named "MyBands"):

Inputs: oUpperBand (NumericRef), oLowerBand (NumericRef);
oUpperBand = Highest (High, 10) [1];
oLowerBand = Lowest (Low, 10) [1];
MyBands = 1;

Questions: 1.1 Why oUpperBand and oLowerBand can be both the input (defined as Inputs) and output (put on the left side of the "=")? 1.2 Why we want to do so? I mean the functionality. 3. Why set MyBands = 1? What is it used for? Could I set MyBands to equal to any numeric value? 4. It's said MyBands is a function, but why it is a function and it isn't a variable? 5. How MyBands is correlated to oUpperBand and oLowerBand?

Calling a Multi-Output Function

Usage Example:

Vars: oUpperBand (0), oLowerBand (0);
Value1 = MyBands (oUpperBand, oLowerBand);
Plot1(oUpperBand);
Plot2(oLowerBand);

Questions: 2.1 Why here we can use Variables oUpperBand and oLowerBand as inputs in the Function MyBands? 2.2 Where we can get the values of the Variables oUpperBand and oLowerBand? They aren't assigned to any function or calculation. 2.3 What is it used for assigning MyBands (oUpperBand, oLowerBand) to Value1?