good reason to increase that value, it is wise to leave it with the default

number.

Tip: Even with the option to work with an undo history. You should keep

a healthy habit of saving your project as much as possible. That will

prevent you from losing data.

2.4 Work modes

Most entities in Blender, like 3D objects, allows the use of different work

modes. Until this moment, you probably used only Object Mode for

general object manipulation. Besides Object Mode, we also have other

modes like Edit Mode, Sculpt Mode, and Texture Paint.

You can easily see all work modes available for a particular entity using

the work mode selector in the 3D Viewport header (Figure 2.12). The

selector displays all work modes available for any selected object.