RevMedia

The depth in virtual space of the current prompt. Note that this can have three value types and does not directly correspond to the number of rows use by the current prompt. The values can be as follows d by the current prompt. The values can be as follows

         0    Single valued prompt or text prompt with one line.
         1    Single lined multi value prompt
         2+   Multi-valued prompt or text prompt with more than one line.
              Number corresponds to screen depth of prompt.