| RAIN(6) | Games Manual | RAIN(6) | 
rain —
| rain | [ -ddelay] | 
rain is modeled after the VAX/VMS program
  of the same name. To obtain the proper effect, either the terminal must be set
  for 9600 baud or the -d option must be used to specify
  a delay, in milliseconds, between each update. A reasonable delay is 120; the
  default is 0.
| May 31, 1993 | NetBSD 9.2 |