> For the complete documentation index, see [llms.txt](https://docs.powerviz.ai/powerviz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.powerviz.ai/powerviz/heatmap/advanced-settings-introduction/grid-lines.md).
# Grid Lines
In Powerviz heatmaps, the grid lines setting controls the visibility and style of the lines that divide the cells in the heatmap. Adjusting these settings enhances data readability by providing a clearer structure and separation of the visual elements.
### Rows
Line Style: Choose from Solid, Dashed, or Dotted lines.
* Width: Set the width of the grid lines.
* Color: Choose the color for the grid lines.
### Columns
Line Style: Choose from Solid, Dashed, or Dotted lines.
* Width: Set the width of the grid lines.
* Color: Choose the color for the grid lines.
Example
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