Expressions

Element	Syntax and Specifications
Selector	Conditional expression that matches when it evaluates to true.
Arithmetic	Include: Pure arithmetic expressions Arithmetic equations Identifiers with numeric values Numeric literals
Conditional	Include: Pure conditional expressions Comparison operations Logical operations Identifiers and Boolean values Boolean literals (true and false)

An example of selector expression usage is:

 ((5+5) = (7+3))=true 

An example of arithmetic expression usage is:

 90/9 

An example of conditional expression usage is:

 x > 10 OR y = true