In a post under "stitching matrices" I used trace poorly to distinguish the hook - % from the fork [ - %@] (these always produce the same results given the same data). Here is what I should have done

   load '~addons/general/misc/trace.ijs'
   f
- %
   g
[ - %@]
   f 4
3.75
   g 4
3.75
   trace '(- %) 4'
 --------------- 6 Bident -----
 -
 %
 - %
 --------------- 8 Paren ------
 (
 - %
 )
 - %
 --------------- 0 Monad ------
 - %
 4
 3.75
 ==============================
3.75
   trace '([ - %@]) 4'
 --------------- 4 Conj -------
 %
 @
 ]
 %@]
 --------------- 5 Trident ----
 [
 -
 %@]
 [ - %@]
 --------------- 8 Paren ------
 (
 [ - %@]
 )
 [ - %@]
 --------------- 0 Monad ------
 [ - %@]
 4
 3.75
 ==============================
3.75


Using JHS

   JVERSION
Engine: j701/2011-01-10/11:25
Library: 7.01.074
Platform: Win 32
Installer: j701a_win.exe
InstallPath: c:/users/kip murray/j701
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