--- gforth/extend.fs	1996/09/10 16:08:36	1.18
+++ gforth/extend.fs	1997/02/06 21:23:00	1.20
@@ -78,8 +78,7 @@ decimal
 \ UNUSED                                                17may93jaw
 
 : unused ( -- u ) \ core-ext
-    s0 @ 512 -        \ for stack
-    here - ;
+    forthstart dup 3 cells + @ + here - ;
 
 \ [COMPILE]                                             17may93jaw
 
@@ -94,7 +93,7 @@ decimal
 \ CONVERT                                               17may93jaw
 
 : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext
-    \ obsolescent; supersedet by @code{>number}.
+    \ obsolescent; superseded by @code{>number}.
     true >number drop ;
 
 \ ERASE                                                 17may93jaw
@@ -161,26 +160,6 @@ decimal
     >in !
     false ;
 
-\ : save-input ( -- x1 .. xn n ) \ core-ext
-\   >in @
-\   loadfile @ ?dup
-\   IF    dup file-position throw sourceline# >tib @ 6
-\         #tib @ >tib +!
-\   ELSE  sourceline# blk @ linestart @ >tib @ 5 THEN
-\ ;
-
-\ : restore-input ( x1 .. xn n -- flag ) \ core-ext
-\   swap >tib !
-\   6 = IF   loadline ! rot dup loadfile !
-\            reposition-file IF drop true EXIT THEN
-\       ELSE linestart ! blk !
-\            dup sourceline# <> IF 2drop true EXIT THEN
-\            loadline !
-\       THEN
-\   >in ! false ;
-
-
-
 \ This things we don't need, but for being complete... jaw
 
 \ EXPECT SPAN                                           17may93jaw