Boolean variables , taking the values True or False , are set by clicking on the buttons labeled True and False . The new value takes effect immediately. Enumerated variables take a value from a discrete set. For example, the preconditioner variable in the main menu can be one of diagonal , block , ILU , ICP , or none . Choose the value from the pop-up menu that appears at the bottom of the Menu.
Orientations are a special kind of keyboard variable.
In this case, the three angles are to be typed in square brackets and separated by commas. A random orientation can be generated by using the letter r in place of any of the numbers. File Names can be typed. In addition, they have another button that brings up a file browser, listing the files in the current directory. You can change directories with the Directory button or by clicking on a directory name.