add
add() Function
Adds number and/or strings together. If all of the arguments to the function are numbers then a numeric addition is performed, if any of the arguments are strings then all of the arguments are concatenated as a string.
Usage
[h: result = add(val1, val2, ...)]
[h: result = sum(val1, val2, ...)]
[h: result = concat(val1, val2, ...)]
Examples
[r: add(1,4)]
Returns 5.
[r: add("Mary", "had", "a", "little", "lamb")]
Returns "Maryhadalittlelamb".
[r: add(1,"4")]