> For the complete documentation index, see [llms.txt](https://cardstock-studio.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cardstock-studio.gitbook.io/docs/design/templates-design-your-cards/layers/fan-grids.md).
# Fan Grids
**Fan Grids** are useful for displaying cards in a row or a "fan" shape, popular when making rules in the Book canvas.
The various controls in the Fan Grid component determine how the fan appears, with cards being presented around the circumference of a virtual circle. Any child of the Fan Grid layer will be displayed — Images, text, shapes, etc.
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## Curl
At value 0, the cards appear in a straight line, and on a curve of a circle at value 1. Values between will interpolate between the two.
The tilt of the card is controlled by the *Tilt* paramter, described below.
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Spacing
When *Curl* = 1, *Spacing* is unavailable and has no effect.
Spacing controls the amount of space between items.
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## Radius & Spread
*Radius* and *Spread* are unavailable and have no effect when *Curl* = 0.
*Radius* controls the size of the virtual circle used for the fan effect. At negative values, the cards are spread around a circle in the opposite direction.
*Spread* determines how many degrees around the circle each item will be placed. With 5 items, a value of 72 spaces them equally around the circle (360 / 5 = 72).
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## Tilt
*Tilt* determines the tilt amount each individual item receives, relative to the one before it. Negative values can be used.
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## Start & Maintain Center
*Start* determines the initial rotation — at 0, it's "straight up and down". Keeping *Maintain Center* toggled on will ensure the center of the fan remains at that point, otherwise new items are added around from that start rotation.
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## Show all Children
By default *Show all Children* is on and all items will be displayed. When false, you can choose a set number of items to display.
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