You can add symbols such as spherical diameter 
or plus/minus 
to text-based table cell entries.
To add symbol text to a table cell:
-
From the table, double-click a cell.
If the cell entry is linked to a property, you are prompted to break or retain the link:
- Break the link to change the table display without changing the property.
- Retain the link to modify the property.
The Note toolbar appears.
- Type or modify text, and click Add Symbol
.
- From the Symbols dialog box, click a Symbol library and select a library item.
For example, click the Modifying Symbols library and select Spherical Diameter.
- Click OK.
The selected symbol appears in the cell.