This was a script which I made today, just cause I were bored. I was reading on the forums, saw a thread about this subject, and I dug into it. I made this little dialog, mainly to please myself, to find all variables and to check if they are used or not!

Paste it into remotes, alt + r and right click status/channel and press the menu.
When you the dialog up, just input a term to search, and thats it! Aint harder then that.

When you click a variable, it will show the variable name in the edit box, and show it's value in the edit box below.

Doubble click the list to clear it.

Press F9 if you wish to have the selected item echo'ed.. (Incase its too long etc).

Updated twice

Updated :P

; Input the script in your remotes file, Alt + R and paste. Then either right click a channel or type /vari to open the dialog.
; Information on how to use the script can be found in the script, when its loaded!
; Enjoy!

dialog Vari {
  title "Variable search"
  size -1 -1 132 143
  option dbu notheme
  text "&Lost or forgotten variables?", 1, 31 4 69 8, disable
  edit "", 2, 4 16 72 10, autohs
  button "&Search!", 3, 84 16 32 10
  list 4, 4 74 124 68, vsbar
  button "?", 5, 84 28 10 10
  edit "", 6, 4 60 72 10, disable
  button "&ok", 7, 84 40 21 10
  button "&Close", 8, 108 40 23 10
  button "&Return", 9, 4 105 25 10
  text This is a simple variable searcher $+ $chr(44)  which will show you the variables found in a match (if there's a match) in the list. Very simple and handy to use. Simply input your variable $+ $chr(44) with or without the '%' and press search. The search button will automaticly be disabled for one second $+ $chr(44) then renable itself $+ $chr(44) to not cause the script to overflood itself. (Wildcards allowed!) By pressing F9 after selecting a variable $+ $chr(44) its specifications will be echoed! $crlf $+ Enjoy!, 10, 4 5 120 100
  edit "", 11, 4 37 72 10, disable
  box "", 12, 2 68 128 72
  menu "&File", 13
  item "&Close", 14,13
  menu "&Help", 15
  item "&View help file!", 16,15
  text "This is a script by Lindrian. You can find me at irc.deltaanime.net @ #L2forever or #Lindrian. Remember, ripping is lame!",17, 4 80 120 20
}

on *:dialog:vari:*:*: {
  if $devent == init {
    did -b $dname 3
    did -h $dname 9,10,17
    did -a $dname 2 Variable...
  }
  elseif $devent == dclick {
    if $did == 4 {
      did -r $dname 4,6,11
    }
  } 
  elseif $devent == menu {
    if $did == 14 {
      unset %vari
      dialog -c $dname
    }
    elseif $did == 16 {
      did -h $dname 1,2,3,4,5,7,8,11,12
      did -v $dname 9,10,17
    }
  }
  elseif $devent == edit {
    if $did == 2 {
      $iif($did(2),did -e $dname 3,did -b $dname 3)
    }
  }
  elseif $devent == sclick {
    if $did == 3 {
      did -r $dname 4,11,6
      set %vari $iif($left($did(2),1) != $chr(37),$+($chr(37),$did(2)),$did(2))
      variable
      did -b $dname 3
      .timer_remove 1 1 did -e vari 3
    }
    elseif $did == 5 {
      did -h $dname 1,2,3,4,5,7,8,11,12
      did -v $dname 9,10,17
    }
    elseif $did == 7 {
      unset %vari
      dialog -c $dname
    }
    elseif $did == 8 {
      unset %vari
      dialog -c $dname
    }
    elseif $did == 9 {
      did -v $dname 1,2,3,4,5,7,8,11,12
      did -h $dname 9,10,17
    }
    elseif $did == 4 {
      did -ra $dname 11 $remove($did(vari,4).seltext,$chr(35),:,$did(vari,4).sel)
      did -ra $dname 6 $iif($($($did(4,$did(4).sel).text),2),$remove($($($did(vari,4).seltext),2),$chr(35),:,$did(vari,4).sel))
    }
  }
}

alias variable {
  var %a = 1
  while $var($did(vari,2),%a) {
    did -a vari 4 $+($chr(35),%a,:) $v1
    inc %a
  }
  did -a vari 4  End of listing.
}

alias vari {
  if !$dialog(vari) {
    dialog -md vari vari
  }
}

alias F9 {
  if $did(vari,4).sel && %vari { echo -a $remove($did(vari,4).seltext,$chr(35),:,$did(vari,4).sel) $+ : $iif($($($did(vari,4,$did(vari,4).sel).text),2),$remove($($($did(vari,4).seltext),2),$chr(35),:,$did(vari,4).sel)) }
}

menu status,channel {
  .$iif(!$dialog(vari),Variable search,$style(2) Variable search): vari
}