The properties you indicate will be applied to the selected cell, that is to the to the command TD or TH. This window has two tabs: General and Advanced.
Select the cell or cells to be modified.
In Table window, click on the Table menu.
Click on the Cell properties option.
The General tab:
| Horizontal Alignment | The horizontal alignment of text inside a cell can be set to the left (default), right, centered or justified. The ALIGN attribute is added to the TD tag. <td width="25" align="left">cell contents </td> | 
| Vertical Alignment | The vertical alignment of text found in a cell could be set to the top, centered (default), bottom or on the cell’s baseline. The VALIGN attribute is added to the TD tag. <td width="25" valign="center">cell contents </td> | 
| Width | The cell’s width can be expressed as a percentage or in pixels. To enter 
 a percentage, the "%" box should be checked. If the box is not 
 checked, then the value is set to pixels.  <TD WIDTH="25">cell contents</TD> | 
| Height | The cell’s height can be expressed as a percentage or in pixels. To 
 enter a percentage, the "%" box should be checked. If the box 
 is not checked, then the value is set to pixels.  <td width="60%" height="20%"> </td> | 
| Color options | Background  <td width="60%" bgcolor="#0000ff"> </td> Border <td width="60%" bordercolor="#0000ff"> </td> | 
| Header cells/ 
 | Indicate if it’s a header cell (TH) or a data cell (TD). Header cells are generally used for the first row or column in a table. They differ from data cells because they are displayed in bold. <th width="25"> </th> | 
| No wrap | The no wrap option prevents word wrapping of text in the cell. It adds the NOWRAP attribute to the command TD or TH. <th width="25" nowrap> </th> | 
 Advanced tab:
 Advanced tab:
These commands apply to Microsoft Internet Explorer only.
| Background image 
 | With Microsoft Internet Explorer, you can add a background image to a cell. Click on the Open button and select the desired image. | 
| Dark border 
 | You can change the color of borders to make them appear darker. Click on the Color button and select the desired color. | 
| Light border 
 | You can change the color of borders to make them appear lighter. Click on the Color button and select the desired color. | 
| Title 
 | When the mouse pointer is placed over the cell, a title will be displayed at the bottom of the table in the Preview window. TITLE="" is inserted in the HTML page. <td title="cell"> </td> |