# NumberStyle Enum

> Specifies the numbering style for page labels in a document.

- Product: Adobe PDF Library 21
- Language: Modern C++
- Version: 21.4.0
- HTML page: https://docs.datalogics.com/apdfl21/ModernCPP/21.4.0/enum/NumberStyle
- Version index: https://docs.datalogics.com/apdfl21/ModernCPP/21.4.0/llms.txt

**Namespace:** `datalogics_interface`

## Description

Specifies the numbering style for page labels in a document.

## Values

- `Decimal = 0`: Decimal arabic numerals (1, 2, 3, ...).
- `RomanUppercase = 1`: Uppercase Roman numerals (I, II, III, ...).
- `RomanLowercase = 2`: Lowercase Roman numerals (i, ii, iii, ...).
- `LetterUppercase = 3`: Uppercase letters (A-Z, AA-ZZ, ...).
- `LetterLowercase = 4`: Lowercase letters (a-z, aa-zz, ...).
- `None = 5`: No numeric portion; only the prefix is rendered.