This will generate the stitches of a design in the View Window in a three dimensional perspective. This gives you a more realistic view of what your design will look like after it is sewn.
Besides pressing the toolbar button, you can also hold down the <Alt> key and press '3' to turn on View Stitches in 3D.
You can customize your 3D view by right-clicking on the 3D button . You will see the following dialog:
Enable Hardware Acceleration: Allows you to use 3D acceleration with your video card. The default in that this control is enabled.
Slow Draw on Toggle: Check this box if you want your graphic to be drawn slowly in 3D as opposed to instantly.
Enable Textures: Check this box to enable texture in your 3D graphic.
Enable Twists: Check this box to enable twists in your 3D graphic.
High Quality Zoom Level: Allows you to set the level at which your graphic switches to high quality zoom and renders the image at a higher quality.
Thread Width: Controls the width of your thread in your 3D graphic.
Reset: Resets all the settings for your 3D customization.