Okay, I need to create a professional and useful wiki document YAML based on the user's request Let me start by understanding requirements. The main is Technology, subcategory, and then Language. The title is YAML. The document should be in markdown format with a clear structure:1 title, overview/int section, several detailed sections (using2 and H3), a references section if needed.

First, I'll outline the structure. The H1 is straightforward: # YAML. Then the overview introduce what YAML is, purpose, and maybe bit of history. I should mention that YAML stands for YAML Ain't Markup Language, which is a recursive acronym. It's a data serialization format that's human-readable, often used for configuration files and data exchange between languages.

Next, the detailed sections. The user wants enough depth. Possible sections could be Features, Syntax Basics, Data Types, Use Cases, Comparison with Other Formats (like JSON, XML), Tools and Libraries, and Best Practices. Each of these can be H2 headings. Under each H2, H3s can break down more specific topics.

For Features, I should highlight readability, simplicity, cross-language support, scalability. Maybe list them with bullet points. Syntax Basics could include indentation, comments, scalars, collections like sequences and mappings. Examples here would be good, using code blocks.

Data Types might cover strings, numbers, booleans, null, dates, and how they're represented. Use Cases can talk about configuration files (like Docker, Kubernetes), data exchange, API responses. Comparing with JSON and XML would show when YAML is preferred or not, maybe a table for differences.

Tools and Libraries should mention popular parsers in different languages, like PyYAML for Python, SnakeYAML for Java. Best Practices could include indentation tips, avoiding tabs, using schema validation, etc.

I need to ensure accuracy. For example, YAML's indentation sensitivity, the use of colons for mappings, hyphens for sequences. Also, note that it's case-sensitive. Mentioning that YAML supports anchors and aliases for reuse would be a good point in advanced features.

The references section can link to the official YAML website, specs, and popular resources. I should check the latest YAML version, which is 1.2 or 1.3, and ensure the info is up to date.

Now, considering the markdown syntax: using headers properly, code blocks with triple backticks and specifying the language. For example, showing a YAML example with ```yaml. Lists should be bullet points or numbered where appropriate.

I need to write in a professional yet easy-to-understand manner. Avoid overly technical jargon, but explain terms when used. For instance, when talking about serialization, maybe add a brief explanation.

Let me start drafting each section. The overview introduces YAML, then each H2 section dives deeper. Make sure each part flows logically. Check for any missing key points, like multi-document support or tags in YAML. Also, note that while YAML is powerful, it has some complexities like the indentation rules which can trip people up.

I should also mention the security aspects, like the risks of using unchecked YAML parsing in certain languages (e.g., PHP's unserialize issues), but maybe that's more advanced. Best practices could include using a schema to validate YAML files, which helps prevent errors.

Putting it all together, the document should meet the length requirement, so around 800 characters minimum, but the user probably wants more. Each section should be sufficiently detailed. Let me make sure to include examples where possible to illustrate concepts, as that aids understanding.