> For the complete documentation index, see [llms.txt](https://docs.internetobject.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.internetobject.org/structure-and-syntax.md).

# Structure and Syntax

- [Internet Object Document](https://docs.internetobject.org/structure-and-syntax/introduction.md): The two-part structure of an Internet Object document — header and data.
- [Header](https://docs.internetobject.org/structure-and-syntax/introduction/header.md): The header section — schemas, definitions, variables, and metadata.
- [Data Sections](https://docs.internetobject.org/structure-and-syntax/introduction/data.md): The data section — section separators, objects, and collections.
- [Structural Elements](https://docs.internetobject.org/structure-and-syntax/structural-elements.md): The characters and tokens that structure and delimit an Internet Object document.
- [Structural Characters & Separators](https://docs.internetobject.org/structure-and-syntax/structural-elements/structural-characters-n-keywords.md): The core characters that organize and delimit data in an Internet Object document.
- [Literals](https://docs.internetobject.org/structure-and-syntax/structural-elements/literals.md): Predefined constant values — booleans, null, and special numbers.
- [Other Special Characters](https://docs.internetobject.org/structure-and-syntax/structural-elements/other-special-characters.md): Functional modifiers — variable, schema, optional, nullable, and sign characters.
- [Whitespace & Indentation](https://docs.internetobject.org/structure-and-syntax/structural-elements/whitespaces.md): Recognized whitespace characters and how the parser treats them.
- [Value Representations](https://docs.internetobject.org/structure-and-syntax/values.md): Overview of the value types Internet Object can represent.
- [Objects](https://docs.internetobject.org/structure-and-syntax/values/object.md): Object value syntax — open and closed objects, keyed and unkeyed values.
- [Arrays](https://docs.internetobject.org/structure-and-syntax/values/array.md): Array value syntax — ordered, comma-separated collections of values.
- [Strings](https://docs.internetobject.org/structure-and-syntax/values/string.md): The three string forms — open, regular, and raw.
- [Open Strings](https://docs.internetobject.org/structure-and-syntax/values/string/open-strings.md): Open strings — the unquoted string form.
- [Regular Strings](https://docs.internetobject.org/structure-and-syntax/values/string/regular-strings.md): Regular strings — quoted strings with escape sequences.
- [Raw Strings](https://docs.internetobject.org/structure-and-syntax/values/string/raw-strings.md): Raw strings — literal strings where backslashes are not escapes.
- [Numeric Values](https://docs.internetobject.org/structure-and-syntax/values/number.md): The numeric value forms — Number, BigInt, and Decimal.
- [Number](https://docs.internetobject.org/structure-and-syntax/values/number/number.md): Standard 64-bit IEEE 754 floating-point numbers.
- [BigInt](https://docs.internetobject.org/structure-and-syntax/values/number/bigint.md): Arbitrary-precision integer values for very large whole numbers.
- [Decimal](https://docs.internetobject.org/structure-and-syntax/values/number/decimal.md): Fixed-precision decimal values for exact, financial-grade arithmetic.
- [Special Numeric Formats](https://docs.internetobject.org/structure-and-syntax/values/number/special-formats.md): Hexadecimal, octal, binary, and scientific numeric literals.
- [NaN and Infinity](https://docs.internetobject.org/structure-and-syntax/values/number/nan-and-infinity.md): The special numeric values NaN and Infinity.
- [Binary](https://docs.internetobject.org/structure-and-syntax/values/binary.md): Binary values written as Base64 byte strings.
- [Date and Time](https://docs.internetobject.org/structure-and-syntax/values/date-and-time.md): Temporal values — dates, times, and date-times as annotated strings.
- [Booleans](https://docs.internetobject.org/structure-and-syntax/values/booleans.md): Boolean values — true and false, in compact and verbose forms.
- [Nulls](https://docs.internetobject.org/structure-and-syntax/values/null.md): The null value — an explicit absence of a value.
- [Case Sensitivity Rules](https://docs.internetobject.org/structure-and-syntax/case-sensitivity.md): Case sensitivity for keys, keywords, and type names.
- [Comments](https://docs.internetobject.org/structure-and-syntax/comments.md): Single-line comments for annotating documents.
- [Encoding](https://docs.internetobject.org/structure-and-syntax/encoding.md): Character encoding — UTF-8 is mandatory; Unicode, BOM, and line endings.
- [Syntax Errors](https://docs.internetobject.org/structure-and-syntax/syntax-errors.md): Common syntax errors and how the parser recovers.


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