1 Introduction
2 Error propagation: Single variable case
 2.1 Example
3 Error propagation: Algorithm for the multi-variate case
 3.1 The multiplication operator
 3.2 The division operator
 3.3 The addition operator
 3.4 The subtraction operator
 3.5 The power operator
4 Examples
 4.1 Recursion
A An example of a multi-variate expression
B Syntax
 B.1 Numbers
  B.1.1 Units
 B.2 Operators and built-in functions
 B.3 Expressions/Statements
 B.4 Sub-expressions
 B.5 Variables and function/procedure names
 B.6 Function/procedure
 B.7 Control statements
  B.7.1 if-else
  B.7.2 while-loop
  B.7.3 for-loop
 B.8 Print statement
 B.9 Formatting