diff --git a/sources/PRINTFN b/sources/PRINTFN
index 093440e2..586b23dd 100644
--- a/sources/PRINTFN
+++ b/sources/PRINTFN
@@ -1,8 +1,11 @@
-(DEFINE-FILE-INFO PACKAGE "INTERLISP" READTABLE "INTERLISP" BASE 10 FORMAT XCCS)
-(FILECREATED " 8-Aug-2021 15:15:00" 
-{DSK}<Users>kaplan>Local>medley3.5>git-medley>sources>PRINTFN.;18 13138  
+(DEFINE-FILE-INFO PACKAGE "INTERLISP" READTABLE "INTERLISP" BASE 10)
 
-      previous date%: " 8-Aug-2021 14:52:38" 
+(FILECREATED "28-Sep-2021 23:52:49" 
+{DSK}<Users>kaplan>Local>medley3.5>git-medley>sources>PRINTFN.;24 13993  
+
+      changes to%:  (FNS PRINTFNDEF PFCOPYBYTES)
+
+      previous date%: " 8-Aug-2021 15:15:00" 
 {DSK}<Users>kaplan>Local>medley3.5>git-medley>sources>PRINTFN.;17)
 
 
@@ -109,7 +112,7 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
              (T (printout TOFILE FN " not found on " LOC "." T])
 
 (PRINTFNDEF
-  [LAMBDA (SRCFIL DSTFIL START END TYPE)                 (* bvm%: " 9-Sep-86 15:54")
+  [LAMBDA (SRCFIL DSTFIL START END TYPE)                (* ; "Edited 28-Sep-2021 23:52 by rmk:")
     (RESETLST
         (PROG (TEM)
               [COND
@@ -128,10 +131,15 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
                      DSTFIL T)
               (PRIN1 "}
 " DSTFIL))
+
+        (* ;; "RMK: Originally the last test was (EQ TYPE 'MAC).  I think this was a typo for MAP, since that argument is set to MAP in FINDFNDEF.  If the typo is fixed, we would end up in the COPYBYTES clause, which we don't generally want.  So changed it also to a NEQ.")
+
+        (* ;; "PFDEFAULT is passed as the TYPE argument on the call from COPYALLBYTES, basically to force COPYBYTES and not do the format and font translations.  It defaults to NIL, not COPYBYTES.  I don't understand what this is trying to control.  Note that the last argument of PFCOPYBYTES (PFDEFAULT here) is ignored.")
+
         (COND
            ((OR (NOT (DISPLAYP DSTFIL))
                 (EQ PFDEFAULT 'COPYBYTES)
-                (EQ TYPE 'MAC))
+                (NEQ TYPE 'MAP))
             (COPYBYTES SRCFIL DSTFIL START END))
            (T (PFCOPYBYTES SRCFIL DSTFIL START END PFDEFAULT)))
         (TERPRI DSTFIL))])
@@ -160,21 +168,23 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
             (T FULL])
 
 (PFCOPYBYTES
-  [LAMBDA (SRCFIL DSTFIL START END FLG)                 (* ; "Edited  8-Aug-2021 14:51 by rmk:")
-                                                             (* ; "Edited 24-Mar-93 14:16 by rmk:")
-                                                             (* lmm "28-Sep-86 14:38")
+  [LAMBDA (SRCFIL DSTFIL START END FLG)                 (* ; "Edited 28-Sep-2021 23:35 by rmk:")
+                                                             (* ; "Edited 24-Mar-93 14:16 by rmk:")
+                                                             (* lmm "28-Sep-86 14:38")
 
-    (* ;; " copy from SRCFIL to DSTFIL, paying attention to font changes. Other stuff about truncating lines gone away.  Interprets all possible EOL conventions as EOL.  Has to call \INCHAR-\INCCODE macros in order to keep track of character count--READDCODE doesn't do that.")
+    (* ;; "RMK: What does FLG do?  It isn't referenced.  It seems to be passed as the value of PFDEFAULT from PRINTFNDEF, and that variable is initialized to NIL.  Remove both, eventually?")
 
-    (* ;; "If END is NIL and START is given, then START is the number of characters to copy from the current file position.  Otherwise, copy to the end of the file.")
+    (* ;; " copy from SRCFIL to DSTFIL, paying attention to font changes. Other stuff about truncating lines gone away.  Interprets all possible EOL conventions as EOL.  Has to call \INCHAR-\INCCODE macros in order to keep track of character count--READDCODE doesn't do that.")
+
+    (* ;; "If END is NIL and START is given, then START is the number of characters to copy from the current file position.  Otherwise, copy to the end of the file.")
 
     (DECLARE (GLOBALVARS CHANGECHAR COMMENTFLG **COMMENT**FLG))
     (RESETLST
         (PROG ((SSTRM (\INSTREAMARG SRCFIL))
                (DSTRM (\OUTSTREAMARG DSTFIL))
                FONTARRAY CHARCODE %#CHARS MAXFONT)
-              (DECLARE (SPECVARS . T))                   (* ; 
-                                             "In particular, #CHARS must be a specvar for \INCCODE")
+              (DECLARE (SPECVARS . T))                   (* ; 
+                                             "In particular, #CHARS must be a specvar for \INCCODE")
               (COND
                  ((IMAGESTREAMP DSTRM)
                   (SETQ FONTARRAY (FONTMAPARRAY))
@@ -187,7 +197,7 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
               [SETQ %#CHARS (COND
                                (END (SETFILEPTR SSTRM START)
 
-                                    (* ;; "Doesn't call \SETFILEPTR cause START has to be checked")
+                                    (* ;; "Doesn't call \SETFILEPTR cause START has to be checked")
 
                                     (IDIFFERENCE (COND
                                                     ((EQ END -1)
@@ -195,26 +205,26 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
                                                     (T END))
                                            START))
                                (START)
-                               (T                            (* ; 
-                                                     "Copy everything from here to the end-of-file")
+                               (T                            (* ; 
+                                                     "Copy everything from here to the end-of-file")
                                   (SETQ START (GETFILEPTR SSTRM))
                                   (IDIFFERENCE (GETEOFPTR SSTRM)
                                          (GETFILEPTR SSTRM]
               (COND
                  ((ILEQ %#CHARS 0)
-                  (RETURN T)))                               (* ; "Nothing to do")
+                  (RETURN T)))                               (* ; "Nothing to do")
           LP  (COND
                  ((ILEQ %#CHARS 0)
                   (CL:WHEN (AND (EQ START 0)
-                                (EOFP SSTRM))                (* ; "We copied the whole file")
+                                (EOFP SSTRM))                (* ; "We copied the whole file")
                       (TERPRI DSTRM))
                   (RETURN T)))
               (SETQ CHARCODE (\INCCODE.EOLC SSTRM ANY.EOLC '%#CHARS %#CHARS))
               (IF (EQ CHARCODE (CONSTANT (CHARCODE.DECODE FONTESCAPECHAR)))
                   THEN 
 
-                        (* ;; 
-                      "No EOL check on font character, otherwise we would be limited to 9 fonts")
+                        (* ;; 
+                      "No EOL check on font character, otherwise we would be limited to 9 fonts")
 
                         (SETQ CHARCODE (\INCCODE SSTRM '%#CHARS %#CHARS))
                         (CL:WHEN (AND (IGEQ MAXFONT CHARCODE)
@@ -257,7 +267,7 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
                                       (COND
                                          ((AND WIDTH (IGREATERP (add HPOS WIDTH)
                                                             RMAR))
-                                                             (* past RIGHT margin, force eol)
+                                                             (* past RIGHT margin, force eol)
                                           (TERPRI DSTRM)
                                           (SETQ HPOS WIDTH)))
                                       (\OUTCHAR DSTRM CC]
@@ -285,7 +295,7 @@ Copyright (c) 1986-1987, 1990, 1999, 2018, 2021 by Venue & Xerox Corporation.
 )
 (PUTPROPS PRINTFN COPYRIGHT ("Venue & Xerox Corporation" 1986 1987 1990 1999 2018 2021))
 (DECLARE%: DONTCOPY
-  (FILEMAP (NIL (1097 11016 (PF 1107 . 3802) (PF* 3804 . 4098) (PMORE 4100 . 4419) (PRINTFN 4421 . 5012)
- (PRINTFNDEF 5014 . 6131) (FINDFNDEF 6133 . 7157) (PFCOPYBYTES 7159 . 10766) (DISPLAYP 10768 . 11014))
+  (FILEMAP (NIL (1134 11871 (PF 1144 . 3839) (PF* 3841 . 4135) (PMORE 4137 . 4456) (PRINTFN 4458 . 5049)
+ (PRINTFNDEF 5051 . 6790) (FINDFNDEF 6792 . 7816) (PFCOPYBYTES 7818 . 11621) (DISPLAYP 11623 . 11869))
 )))
 STOP
diff --git a/sources/PRINTFN.LCOM b/sources/PRINTFN.LCOM
index da21f692..3fc6dc26 100644
Binary files a/sources/PRINTFN.LCOM and b/sources/PRINTFN.LCOM differ
