A box that appears around selected 3D models. The box shows the six sides or faces of a model—the top and bottom, left and right, and front and back sides. You can use the sides of the box to move the model. You can use the green squares that surround the box to resize the model.

Hue corresponds to the pure colors of the rainbow. Red is arbitrarily chosen to have a hue of 0.0 (and 1.0). In the color wheel, hues are arranged circularly. As the hue increases the color changes to orange, yellow, green, cyan, blue, magenta, and back to red. Cyan has a value of 0.5.

Markers are special 3D objects you include to call attention to certain areas of a model. You attach notes to these markers.

A model's appearance is determined by the material fromwhich it is made. The material determines the the color of the model, whether the model looks plastic or metallic, whether the model appears rough or smooth, and whether the model is opaque or transparent.

Notes provide the content for your annotation. For instance, a note may be ASCII text, sound, or a movie.

Saturation refers to the amount of white mixed with a pure hue. It's arranged radially in the color wheel. If the saturation value is 1.0, the color is pure. If the saturation value is 0.0, the color is white. Here's an example: If the hue is 0.0, your base color is red. Decreasing the saturation value is comparable to adding white paint to a can of red paint. A saturation value of 0.5 means you've added half a can of white paint to your can of red paint. The result: pink.

An area that displays helpful messages. For instance, when you place the cursor over a note button, you see a brief description of that button. For example, place the cursor over the musical notes and the status area displays “Recor Sound Note.”

This is the directory in which Annotator places note files before you have saved the document. By default, it places the files in your /var/tmp or /usr/tmp directory (unless you have used the environment variable $TMPDIR to specify a different temporary storage place).

Value refers to the lightness or darkness of a particular color. 0.0 is the darkest (black) and 1.0 is the brightest.