alues to delete</td></tr>
    <tr><td>Value</td><td>-</td><td>list of values to add</td></tr>
    <tr valign='top'><td>IsCreating</td><td>-</td><td>must be set for the tag to be added, otherwise just
        changed if it already exists.  A value of 2 will create a new tag if its group already
        exists, but won't add a new group</td></tr>
    <tr valign='top'><td>Next</td><td>-</td><td>reference to next new value hash in linked list
        if there is more than one new value hash (for writing to diff