Preferences
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Dialog Box: Preferences [ Settings Menu]

Scaling units. This sets either inches or centimeters as the units for overall use in SHAPE. This choice may be locally overridden for printing or other output (File menu) by the Units setting in some of the dialogs involved.

On-screen rotation increment (degrees) . This is the amount by which the image is rotated in the Dialog Bar - Left . This is the value which is in the dialog when it is first called; this value and not the latest value in the dialog itself is saved on quitting SHAPE.

On-screen rescaling factor (%) . This is the default amount by which the drawing is rescaled with the Scale button in the Dialog Bar - Right. This is the value which is in the dialog when it is first called; this value and not the latest value in the dialog itself is saved on quitting SHAPE.

Stereopair rotation angle . This is used in the Stereopair and Anaglyph modes set in the Drawing Modes sub-menu of the Modes menu or in the Dialog Bar - Left. Each view is rotated by this amount; about 3 degrees is normal. The value can also be set in the Dialog Bar - Right.

On-screen resizing factor. This is the factor by which the central distance of the selected form is increased by a click with the left button when in the Resizing Cursor Mode. Clicking on the right button decreases the central distance by the inverse of this factor.

Radius of stereonet symbols. This is the size, in inches or centimeters, of the symbols for crystal axes and face poles in the stereonet mode, selected in the Modes menu.

Sounds . This turns on or off the sounds emitted by SHAPE, for example at the beginning and end of calculation and/or plotting (some system sounds are unaffected).

Edges in faces. When different crystals in intergrowths have parallel and coincident faces, the edges lying in this common surface may or may not be realistic or meaningful, and you can elect to draw them or not. Usually the drawing is simpler and more satisfactory without them.

Always show composition-plane edges . Twins by reflection on the composition plane should always match exactly at the junction, and a certain short-cut in the drawing of such twins is often useful. When this box is not checked, if the composition plane is forward-facing, edges with this composition plane are not drawn. This often allows simple twins to be drawn without using the Remove Hidden Lines option in the Display menu. However, if the twin is by reflection, the two individuals often do not match exactly on the composition plane, and visible edges may be omitted. Generally, for correct drawing of mismatching rotation twins this box should be checked, and also the Edges in faces box . If the Always show composition-plane edges box is checked, the Remove Hidden Lines option in the Display menu must be selected.

Screen start-up. This sets the color/black-and-white state of the screen at start of SHAPE. It can be changed with the Color command in the Display menu.