| Pen | Specifies the pen number whose symbol attributes are to be changed. |
| Colour | Provides a list of colours that can be used for the symbol. |
| Symbol | Specifies the symbol to be used for the pen. |
| Size | Specifies the size of the symbol. |
| Fill Colour | When selected, provides a list of colours that can be used to fill the symbol. |
| Apply | Applies the changes to the selected pen in the list. |
| Apply to selection | If a selection has been made you can apply the changes to each item in the
selection. On clicking the button you are prompted with a dialog where you can choose which of the attributes are changed
within the list.. |