CDF Script (stylized: cdfScript) is the scripting language used to describe card behavior.

It is strongly typed, although types for variables and expressions are always inferred so they aren't actually visible when writing the language.

CdfScript is either evaluated as single expressions or as a contiguous script flow

Card description files often require standalone cdfScript expressions.
Such expressions are made up of

The following is an index of all language features in cdfScript, linking to their explanations:

• Operators
• Functions
• Variables
• Types
• Objects
• Control Flow
• Object Match Syntax ([from ... where ...])
• Object Modifier Syntax (like {prop += expr})