# NumberStyle Enum

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

- Product: Adobe PDF Library 21
- Language: Java
- Version: APDFL21.0.0PlusP1f
- HTML page: https://docs.datalogics.com/apdfl21/Java/APDFL21.0.0PlusP1f/enum/NumberStyle
- Version index: https://docs.datalogics.com/apdfl21/Java/APDFL21.0.0PlusP1f/llms.txt

**Namespace:** `com::datalogics::PDFL`

## Description

Specifies the numbering style for page labels in a document.

## Values

- `DECIMAL`: Decimal arabic numerals (1,2,3...)
- `LETTER_LOWERCASE`: Lowercase letters (a,b,c...aa,bb...)
- `LETTER_UPPERCASE`: Uppercase letters (A,B,C...AA,BB...)
- `NONE`: Use no NumberStyle, only Prefix
- `ROMAN_LOWERCASE`: Lowercase Roman numerals (i,ii,iii...)
- `ROMAN_UPPERCASE`: Uppercase Roman numerals (I,II,III...)