41 lines
1.2 KiB
Markdown
41 lines
1.2 KiB
Markdown
---
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title: Layers
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---
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## Summary
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Often, you may want a certain key position to alter which layers are enabled, change the default layer, etc.
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Some of those behaviors are still in the works; the ones that are working now are documented here.
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## Defines To Refer To Layers
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When working with layers, you may have several different key positions with bindings that enable/disable those layers.
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To make it easier to refer to those layers in your key bindings, and to change which layers are where later, you can
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add a set of `#define`s at the top of your keymap file, and use those layer in your keymap.
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For example, if you have three layers, you can add the following to the top of your keymap:
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```
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#define DEFAULT 0
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#define LOWER 1
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#define RAISE 2
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```
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This allows you to use those defines, e.g. `LOWER` later in your keymap.
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## Momentary Layer
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The "momentary layer" behavior allows you to enable a layer while a certain key is pressed. Immediately upon
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activation of the key, the layer is enabled, and immediately open release of the key, the layer is disabled
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again.
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### Behavior Binding
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- Reference: `&mo`
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- Parameter: The layer number to enable/disable, e.g. `1`
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Example:
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```
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&mo LOWER
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```
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