Introduction
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Modeling is simply the art and science of creating a collection of atoms that either mimics the shape of a real-world material or expresses your imagination of abstract material.

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Modes
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There are two principal modes (``Object`` and ``Edit``) which are used for creation, editing and manipulation of atoms. In the top left corner of the 3D viewport, you can find the Mode select menu:

.. image:: /images/object_mode-1.png
   :width: 5cm

Or you can use the hotKey: ``Tab`` key for switching between edit and object modes. Switching between modes while modeling is common. Some tools may be available in more than one mode while others may be unique to a particular mode.


Object Mode
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The default mode. To edit the object as whole, e.g. position, rotation, size.



Edit Mode
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Edit Mode is the main mode where modeling takes place. Edit Mode is used to edit the following types of objects:

- Atom
- Cell
- Bond
- Plane
- Isosurface

To edit the elements in a object. e.g. single atom, bonds. You can enable atoms indices in the Viewport Overlays panel from the 3D viewport.

.. image:: /images/object_mode-2.png
   :width: 8cm


You can only modify the element of the objects you are editing. To modify other objects you can leave Edit Mode, select another object and enter Edit Mode, or use Multi-Object Editing.