With a table cell selected and the Properties palette open, click in the value cell for Border Lineweight or Border Color, and click the [...] button.
The following options are displayed.
Controls the properties of the borders of the selected table cells.
Sets the lineweight to be used for borders that are displayed. If you use a heavy lineweight, you may have to change the cell margins.
Sets the linetype to be used for borders that are displayed.
Sets the color to be used for borders that are displayed.
When checked, a double line border will be added to the selected cells.
Determines the spacing of double-line borders. The default value is .1800.
Displays a preview of how the borders of the selected table will look.
Linetypes will not display in the preview.
Applies the border properties settings to all borders of the selected table cells.
Applies the border properties settings to the outside borders of the selected table cells.
Applies the border properties settings to the inside borders of the selected table cells.
Applies the border properties settings to none of the borders of the selected table cells.
Applies the border properties setting to the top borders of the selected table cells.
Applies the border properties setting to the inside horizontal borders of the selected table cells.
Applies the border properties setting to the bottom borders of the selected table cells.
Applies the border properties setting to the left borders of the selected table cells.
Applies the border properties setting to the inside vertical border of the selected table cells.
Applies the border properties setting to the right border of the selected table cells.