> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://documentation.celestory.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# 🖱️ Navigation

**Block selection**

To select several blocks, hold down the shift key and hold the left mouse click to draw a selection frame. The selected blocks will change to have the same colored frame. 

When you have selected different blocks, various options are disponible. For example, you can move, copy/paste, delete all the selection. You can also right click on it and open a new menu, in which specific options for grouped blocks will appear. You can label all the selection, create a group (which you can name and give a color) and blackbox it, which is very useful if you want to create efficient and quick graph. More informations about blackboxing are disponible here : http://help.celestory.io/en/articles/3978841-open-a-graph

![](https://storage.crisp.chat/users/helpdesk/website/60b55b5a38038000/cecc3e76-78de-4b32-8135-6a81bc_1lgtcuy.png)

![](https://storage.crisp.chat/users/helpdesk/website/1fbca4ba937a7300/7ab18bcd-2c30-4a9f-898d-4ae2d7_k9avrf.png)

**Zoom button +**

The zoom + button allows you to gradually zoom in on your graph. 

**Zoom button -**

The zoom button - allows you to gradually zoom out in your graph.

Zooming in and zoomong out allow you to get a simple and detailed vision. The first one appears when you zoom out, and you will see that your graph switches to simplified view mode to get a better overview of your graph. The blocks are then composed only of their titles and keep the same color. The second one is when you zoom-in, and it will allows you to link one block to another, and to set different options.

**Adjust view button**

The Adjust View button allows you to refocus and zoom out as much as possible the view of your graph.

![](https://storage.crisp.chat/users/helpdesk/website/ecdf3784be10c80/61dc006d-5a5a-4055-adec-b6be07_1t35h4x.png)