In mathematics, an argument of a function is a value provided to obtain the function's result. It is also called an independent variable.

In the Ecolego an argument is defined as a value sent to a function, or to expressions or lookup tables.

Different functions require different amounts of arguments, examples:

• time() requires no arguments. You need therefore not write the parenthesis, but can call the function using only the name: time. Returns the current simulation time in the simulation time unit.
• sin() requires one argument - the angle. Returns the trigonometric sine of an angle.
• abs() requires one argument - the value, or parameter/expression name to return its absolute value.
• mod() requires two arguments - the dividend and the divider. The function helps find a remainder after a number (dividend) is divided by another number (divisor).
• max() requires two, or more, arguments and will return the highest of the given arguments.
• A lookup table which has been configured to accept arguments accepts only one argument - the lookup key.
• An expression which has been configured to acccept arguments requires exactly the number of arguments as the configuration specifies.

• Function
• Expression
• Lookup table