The Worksheet is the window where the molecule appears on the screen and where the on-screen editing of the molecule occurs. This window contains a horizontal scroll bar when the window is active- that is, when it is possible to create, edit and view a molecule. If there is just one molecule that is in use, then the scroll bar appears to show that there is a molecule present, but the scroll bar is deactivated. When more than one molecule is present, the scroll bar is activated and you may switch between molecules by altering the value of the scroll bar by using the scroll box or the arrows. Each molecule has it╒s own separate settings.
The molecule may be edited in this window using some powerful editing capabilities.
By double-clicking, an atom may be created or modified, depending where the click occurred. If you double-click in an existing atom, a dialog box will appear which will enable you to change the atom or it╒s coordinates or both.
If you double click in an area that does not contain an atom or bond, the dialog window will appear, but with a '*' for the atomic symbol (signifying a point or node) and the approximate coordinates of the point clicked in the XY plane with the Z coordinate equal to zero.
You also may view the transformed coordinates - a feature similar to the Transform button in the Edit Coordinates╔╩menu item. If this box is checked and the OK button is pressed, then the molecule will be Set To Identity.
This option works with the Quick 'N' Dirty option.
Part or all of the molecule may be moved on different planes, depending upon what keys are being held down and using the click and drag motion of the mouse.
If the Option key is pressed while clicking in a selected portion of the molecule, an outline of the selected part will follow the mouse, and the offset from the original point will appear in the message window. The Shift key will horizontally or vertically constrain the movement of the molecule. If both the Option and Command keys are pressed, then then selected parts of the molecule will travel along the Z axis by an amount displayed in the message window. By moving the mouse up, the parts will be pushed back along the negative Z axis; by moving the mouse down, the parts of the molecule will be pulled forward along the positive Z axis.
If the Viewing Angle is set to a value other than zero (0.0) then the outline of the image will not exactly match where the image appears on the screen when the mouse is released, but the offset is still valid.
Both of the options set the molecule to Identity and are not affected by the Quick 'N' Dirty option.
By selecting part of the molecule and pressing the Backspace key, the selected portion is removed from the molecule (as in the Clear menu item). This operates with the Quick 'N' Dirty option.
