In your .dwt file, open the Paper Space layout do one of the following:
1) Using Diesel (built into Autocad)
Type "Field" in the command line, select "Other", "Diesel Expression", and enter "$(getvar,"ctab")" (everything between the quotes, but NOT the outside quotes), click "OK", and place the field. You can use properties to change font, size, etc.
2) Not using Diesel (there are known problems with Diesel, but not in the above case)
Type "Field" in the command line, select "Other", "System Variable", and select "ctab", click
"OK", and place the field. You can use properties to change font,
size, etc
Next, type "FieldEval" and change it to "16". This will update the field every time you change to that tab.
Simple, easy AutoCAD at its finest...
Wm