> For the complete documentation index, see [llms.txt](https://xlswriter-docs.viest.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xlswriter-docs.viest.me/english/style-list/border-style-constants.md).

# Border style constants

```php
BORDER_THIN                // thin border style
BORDER_MEDIUM              // Medium border style
BORDER_DASHED              // dashed border style
BORDER_DOTTED              // dashed border style
BORDER_THICK               // thick border style
BORDER_DOUBLE              // bilateral style
BORDER_HAIR                // hair border style
BORDER_MEDIUM_DASHED       // medium dashed border style
BORDER_DASH_DOT            // dash border style
BORDER_MEDIUM_DASH_DOT     // medium dotted line border style
BORDER_DASH_DOT_DOT        // Dash-dot-dot border style
BORDER_MEDIUM_DASH_DOT_DOT // medium dotted line border style
BORDER_SLANT_DASH_DOT      // slanted dotted line border style
```