Language reference

Look up an exact form here. If you are starting from zero, begin with your first strategy.

I need…	Reference
Complete strategy structure	Strategy sections
Keyword or accepted spelling	Keywords and aliases
Indicator arguments, defaults and examples	Indicator library
Broader function and data-field catalog	Indicators and functions
An error code and correction	Errors and warnings
Exact sizing forms and limits	Sizing details

The writing guides explain when and why to use these forms.

Find the guide that explains the decision

Use the reference when you know which form you need. If the uncertainty is about behaviour, open the matching guide:

Question	Guide
Does this comparison fire once or remain true?	Conditions.
Which clock and bars count?	Schedules.
What does a missing sizing phrase mean?	Sizing defaults.
Is this a price distance or a portfolio percentage?	Protection.
Should holdings trade independently or rebalance together?	Multiple instruments and hold portfolios.
Which combinations are runnable?	Supported features.

Reference signatures and catalogs are generated from Atom's public sources; explanations teach the units and intent. Accepted syntax, supplied data and executed fills are separate checks. Read the relevant topic's defaults and constraints before combining two individually valid forms.