$logctl(REFNUMS [ACTIVE|INACTIVE|ALL])
$logctl(REFNUM <log-desc>)
$logctl(ADD log-desc [target])
$logctl(DELETE log-desc [target])
$logctl(GET <refnum> [ITEM])
$logctl(SET <refnum> [ITEM] [VALUE])
$logctl(MATCH [pattern])
$logctl(PMATCH [pattern])
$logctl(CURRENT)

• $logctl(REFNUMS ALL)
  Returns refnums of all logfiles
• $logctl(REFNUMS ACTIVE)
  Returns refnums of all active (“on”) logfiles
• $logctl(REFNUMS INACTIVE)
  Returns refnums of all inactive (“off”) logfiles
• $logctl(REFNUM <log-desc>)
  Return refnum of logfile given its refnum or name.
• $logctl(MATCH [pattern])
  Return empty string (unimplemented for now)
• $logctl(PMATCH [pattern])
  Return empty string (unimplemented for now)
• $logctl(ADD log-desc [target])
  Add a target to be logged to an existing logfile
• $logctl(DELETE log-desc [target])
  Remove a target to be logged from an existing logfile
• $logctl(GET <refnum> [ITEM])
• $logctl(CURRENT)
  Return refnum of logfile we're currently writing to. This function is intended to be called from within /set log_rewrite.
  • -1) Nothing at all is being logged.
  • 0) Something is being logged into a global log or a window log.
  • >0) Something is being logged to given log refnum.
• $logctl(SET <refnum> [ITEM] [VALUE])
  Supported [ITEM]s
  • REFNUM (GET only) The logfile's refnum
  • NAME The logfile's name
  • FILENAME The file we're saving the log to
  • SERVER The server we're logging.
  • TARGETS All of the target's we're logging
  • LEVEL The levels we're filtering the logfile on
  • REWRITE How we're rewriting each line of the log
  • MANGLE How we're mangling each line of the log
  • STATUS 0 if “off”, 1 if “on”
  • TYPE What we're logging: “SERVER”, “WINDOW” or “TARGET”
  • ACTIVITY The last $time() the logfile was written to.

The $logctl() function first appeared in EPIC4-1.1.8.
ACTIVITY and REFNUMS first appeared in EPIC4-1.1.11.