Show more than 2 cursors ?

Is there a way to show more than just two cursors at a time ?
Default is show a cursor pair, either A & B or C & D. It would be handy to have 4 cursors available...
Any trick ?
You can drag cursors A and B on the trace, change to cursor pair C and D, and drag them on the graph as well.
You may also use the command line:
make test=x
display test
Cursor A test 20
Cursor B test 30
Cursor C test 40
Cursor D test 50
Cursor E test 60
Cursor F test 70


Calculations, e.g., distances, on the non-standard pairs have to be done manually afaik.
HJ