# Working with Canvas

## Basics of Canvas

**Add and Edit Nodes**

Select a node on a toolbar and click on it; the node will be added to the flow and automatically connect to the selected node on canvas.

Click the right mouse button to open the context menu, where you can:

* rename the node
* disconnect the node from the previous one in the flow
* duplicate
* delete

#### **Connect Nodes**

If no nodes were previously selected on the canvas and a new node was added, you will see a blue frame around the canvas and sign "Select input node." You need to select a node to connect to and click on it; a new node will be connected to the selected one.

You can disconnect the node via the context menu.

#### **Multi-node selection**

You can select multiple nodes, see [instructions](#multi-nodes-selection), and then:

* drag-and-drop selected nodes on the canvas
* delete all selected nodes via the context menu
* group nodes, see [instruction](https://docs.tomat.ai/product-overview/designing-flows/flow-designer-guide/using-groups)
* add the union transform to merge selected datasets

## Canvas Controls

#### Multi-nodes selection

* **Mouse:** Shift + Left button - hold and drag
* **Trackpad:** Shift + Imitation of the left button - hold and drag

#### Zoom in and out

* **Mouse:** Hold down  ⌘ Command (Mac) or Ctrl (Windows) and scroll the mouse wheel up to zoom in or down to zoom out.
* **Trackpad:** Pinch two fingers together to zoom out or stretch two fingers apart to zoom in
* **Hotkeys:**
  * Zoom in: Shift +
  * Zoom out: Shift -
  * Zoom to fit: Shift 1

## **Canvas Menu**

#### **Centralize**

Use the centralize button on the lower right corner of the canvas to reset zoom and canvas position.

#### **Minimap**

Hover over the centralize button and wait till the menu is opened; select a minimap to see the whole flow at a glance.

#### Text Note

Hover over the centralize button and wait until the menu opens; select a note. You can change a note's color text and move it around the canvas. 

Open the context menu on the right mouse button to remove or duplicate the note.