> For the complete documentation index, see [llms.txt](https://docs.infotopics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.infotopics.com/powerkpis/features/format-nodes-and-links/charts.md).
# Charts
In the Charts tab, you can set the default colors for the colors used in the charts and some more options to customize the trend charts.
### Show zero line in line charts
For line charts it is possible to truncate the y-axis. This is especially handy, when displaying KPIs where small changes can have a big impact. Change the setting to Exclude 0 to use the full scale of the charting area.
**Include 0**
**Exclude 0**
### Grid lines
By default, grid lines only appear on zoom when zooming in or when you do a focussed zoom by double-clicking a card. In this setting, you can show grid lines permanently.
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