Select the desirable model from the drop down list or load a model from a disk.
To save a modified model to a disk push the 'Save Model' button.
'Selection Set' list displays the full names of the selected shapes in the view.
To edit the model variables press F2 key while being in the Vars grid. To make changes take place push the 'Update Model' button.
Type in the 'Model Description' edit box your modifications to the model and then push the 'Update Model' button. If you make a syntax error it is displayed in the 'Model Errors' list box.
The 'Model View' demonstrates selecting, real time zoom and pan. While you move the mouse pointer over the model you see the paper coordinates change in the status bar and if you hit a shape you get its name also.
To add a single shape to the selection set push down the arrow button and click the mouse when its pointer hits a shape.
To add to the selection set shapes that cross a selection box push down the 'Select crossing' button and start dragging the selection box on the view.
To add to the selection shapes that are bounded in a selection box push down the 'Select window' button and start dragging the selection box on the view.
To clear all the selections push the 'Update Model' button.
Push down the 'Pan' button and start dragging the view with the mouse.
Push down the 'Zoom' button and start dragging the view up and down with the mouse to change the zoom factor.
To view all the contents of a drawing push the 'Zoom All' button.
To push up the buttons you can right click the mouse while its pointer over the view.
