Apple Numbers '09 - Manual (Page 113)

Chapter 4 Working with Table Cells 113
When you change the name of a custom format, the previous name remains
associated with cells to which it had been applied, and the previous name is removed
from the list of custom formats. To associate the new format name with these cells,
select the cells and choose the new name from the Cell Formats pop-up menu in the
format bar or the Cell Format menu in the Cells inspector.
Reordering, Renaming, and Deleting Custom Cell Formats
You use the cell format management dialog to manage custom cell formats. The dialog
lists all the custom formats available in the document.
To manage custom cell formats:
1 If the custom cell format management dialog isn’t open, click Manage Formats in the
custom format dialog, or choose Format > Manage Custom Cell Formats to open it.
2 Do any of the following:
Rename a custom format by double-clicking the format and typing your changes.
Reorder custom formats in the pop-up menus by selecting a format and then clicking
one of the arrows below the list to move it up or down in the list.
Delete a custom format by selecting a format and then clicking the Delete (–) button
below the list.
3 Click OK to save your changes and close the dialog.