> ## Documentation Index
> Fetch the complete documentation index at: https://docs.strandai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Viewer keyboard shortcuts

> Keyboard shortcuts for panning, zooming, toggling layers, and controlling markers in the slide viewer.

The slide viewer supports keyboard shortcuts for common actions. Press
<kbd>?</kbd> at any time (or click the <kbd>?</kbd> button in the viewer
toolbar) to open the same cheatsheet inside the viewer.

## Layers

| Shortcut                                   | Action                                                      |
| ------------------------------------------ | ----------------------------------------------------------- |
| <kbd>H</kbd>                               | Toggle the H\&E background layer                            |
| <kbd>A</kbd>                               | Auto-contrast the selected marker                           |
| <kbd>\[</kbd> / <kbd>]</kbd>               | Select the previous / next marker                           |
| <kbd>Alt</kbd> + click a marker's checkbox | Solo that marker (show only it); Alt-click again to restore |

## View

| Shortcut     | Action                     |
| ------------ | -------------------------- |
| <kbd>S</kbd> | Toggle split / single view |
| <kbd>F</kbd> | Toggle fullscreen          |
| Arrow keys   | Pan the slide              |
| Scroll       | Zoom in / out              |

## Tools

| Shortcut       | Action                                       |
| -------------- | -------------------------------------------- |
| <kbd>V</kbd>   | Pan / select tool                            |
| <kbd>M</kbd>   | Measure tool                                 |
| <kbd>Esc</kbd> | Cancel measure, or close the shortcuts panel |

## Help

| Shortcut     | Action                           |
| ------------ | -------------------------------- |
| <kbd>?</kbd> | Show or hide the shortcuts panel |

Shortcuts are ignored while typing in a text field, so they never interfere
with search or numeric inputs.