Sierra Chart ACSIL Documentation

Last updated: June 30, 2025

This is the converted documentation for Sierra Chart's Advanced Custom Study Interface and Language (ACSIL). The documentation has been converted from HTML to clean, LLM-friendly Markdown format.

About ACSIL

ACSIL (Advanced Custom Study Interface and Language) is Sierra Chart's powerful C++ based framework for creating custom studies, indicators, and automated trading systems. It provides access to:

• Real-time and historical market data
• Chart data and technical indicators
• Trading functions for automated systems
• Drawing tools and user interface elements
• Advanced mathematical and statistical functions

Documentation Sections

Core Documentation

• ACSIL Programming Concepts
• Advanced Custom Study Interface and Language (ACSIL)

ACSIL Interface Members

• ACSIL Interface Members - Functions
• ACSIL Interface Members - Functions
• ACSIL Interface Members - Graphics Functions
• ACSIL Interface Members - Introduction
• ACSIL Interface Members - Variables and Arrays
• ACSIL Interface Members - sc.Input Array
• ACSIL Interface Members - sc.Subgraph Array
• Using ACSIL Study Calculation Functions
• Working with the SCDateTime Variables and Values

Examples and Tutorials

• Example ACSIL Trading Systems
• How to Build an Advanced Custom Study from Source Code
• Step-By-Step ACSIL Debugging
• Working with ACSIL Arrays and Understanding Looping

Advanced Topics

• Advanced Custom Study Interaction With Menus, Control Bar Buttons, Pointer Events
• Automated Trading From an Advanced Custom Study
• Referencing Other Time Frames and Symbols When Using the ACSIL
• Using Drawing Tools From an Advanced Custom Study

Other Documentation

• ACSIL Interface - Custom Chart Bars
• ACSIL Interface Members - Historical Market Depth Data (c_ACSILDepthBars)
• ACSIL Study Documentation Interface Members
• Developing Custom Studies and Systems for Sierra Chart
• User Contributed Advanced Custom Study System Source Code

Downloadable Resources

Source Code Examples

• C++ Source Files - 99 complete ACSIL example files including:
  • User-contributed studies and indicators
  • Trading system examples
  • DTC protocol implementations
  • Custom chart types and analysis tools

Images and Assets

• Documentation Images - Screenshots and diagrams from the original documentation
• Study Collections - Downloadable study collection files (.stdycollct) and configurations

Notes

• Code examples default to C++ syntax highlighting
• Images reference original documentation paths
• Internal links have been converted to relative Markdown paths