Synopsis:
   $idle()

Technical:
   Returns your idle time.  Synonymous with $G.  

Practical:
   This function is used to get your client's idle time. Note that the 
   client's concept of "idle time" is not necessarily the same as your 
   server's (and in fact usually isn't).

Returns:
   number of seconds since last keypress

See Also:
   Special_Vars(7)

