Mine

void do_afk ( CHAR_DATA *ch, char * argument)
{
    if (IS_SET(ch->comm,COMM_AFK))
    {
      send_to_char("AFK mode removed. Type 'replay' to see tells.\n\r",ch);
      REMOVE_BIT(ch->comm,COMM_AFK);
    }
   else
   {
     send_to_char("You are now in AFK mode.\n\r",ch);
     SET_BIT(ch->comm,COMM_AFK);
     do {
    send_to_char("You are in AFK mode, if you want to play normally set AFK off$
      REMOVE_BIT(ch->comm,COMM_AFK);
    }
   else
   {
     send_to_char("You are now in AFK mode.\n\r",ch);
     SET_BIT(ch->comm,COMM_AFK);
     do {
    send_to_char("You are in AFK mode, if you want to play normally set AFK off$
    delay(10);
  } while (ch->comm!=COMM_AFK);
   }
}