which version am i running

[Miranda Gomez Miguel Angel]

Hi list,
sorry for this silly question, but i just finished a make world (from
4.8-release to 4.8-stable, using the stable-supfile in
/usr/share/examples/cvsup), i  followed the handbook instructions verbatim,
all it went ok but i dont see any obvious changes, 
How can i know which version (branch) is the machine running ? 
Thanks,
Miguel M.