$ OUT=$(smenu -i[2-3] -N '2|4' -e3 -i3 t0005.in)

     1   1) 2      3      4      5      6      7      8      9      10 
5:24 7:01 8:01 9:01 10:01 12:07 19:24 26:24 33:24 40:24 47:24 54:24 61:24 68:24 69:24 
     11   2) 12      13      14      15      16      17      18      19 
5:24 6:24 8:01 9:01 10:01 11:01 21:24 22:24 29:24 30:24 37:24 38:24 45:24 46:24 53:24 54:24 61:24 62:24 69:24 70:24 
  3) 20 
0:01 1:01 2:01 3:01 
$ 

$ echo ":$OUT:"

:2:

$ exit 0