# Guide to This Document
This document is the protocol document for the central control of GrandShow, which is a software preinstalled in Colorlight's multimedia servers. This document contains:
- introduction to how to use the central control protocol;
- examples of detailed central control command;
- things you should know before using the central control protocol;
- solutions to various frequently inquired problems.
Before you read this document, please go through this section to understand the document's structure and major contents for reference.
# Notes
We list in this document the possible questions you might encounter during the use of the protocols, and add some notes for the tutorial documents.
If you have any technical-related questions, please provide feedback through the community or submit a form. Our technical staff will follow up on your inquiries.
# Document Map
# API Overview
Relevant APIs are categorized according to the specific functions they fulfill. Please refer to the API section for detailed information.