VE: replace 'W' with 'b' and implement 'W' and 'B'

Which are end-of-word movements.

blk/122

@@ -1,6 +1,7 @@
 'H' goes to the beginning of the line, 'L' to the end.
 
-'w' moves forward by a word. 'W' moves backward by a word.
+'w' moves forward by a word. 'b' moves backward by a word.
+'W' moves to end-of-word. 'B' moves backward to end-of-word.
 
 'I', 'F' and 'E' invoke the corresponding command from the
 Block Editor (B100). Refer to documentation there.

blk/125

@@ -1,3 +1,3 @@
 '? UPPER NOT [IF] 33 LOAD+ [THEN] DROP ( B158 )
 -23 LOAD+ ( B102, block editor )
-1 4 LOADR+
+1 5 LOADR+

blk/128

@@ -1,15 +1,13 @@
+: _pos! 1023 MIN DUP 0< IF DROP 0 THEN EDPOS ! ;
 : $w EDPOS @ BLK( + acc@ 0 DO
     BEGIN C@+ WS? UNTIL BEGIN C@+ WS? NOT UNTIL LOOP
-    1- BLK( - 1023 MIN EDPOS ! ;
+    1- BLK( - _pos! ;
 : $W EDPOS @ BLK( + acc@ 0 DO
+    1+ BEGIN C@+ WS? NOT UNTIL BEGIN C@+ WS? UNTIL LOOP
+    2- BLK( - _pos! ;
+: $b EDPOS @ BLK( + acc@ 0 DO
+    1- BEGIN C@- WS? NOT UNTIL BEGIN C@- WS? UNTIL LOOP
+    2+ BLK( - _pos! ;
+: $B EDPOS @ BLK( + acc@ 0 DO
     BEGIN C@- WS? UNTIL BEGIN C@- WS? NOT UNTIL LOOP
-    1+ BLK( - DUP 0< IF DROP 0 THEN EDPOS ! ;
-: $R ( replace mode )
-    mode! 'R' EMIT
-    BEGIN setpos C< DUP 0xd = NOT IF
-        EDPOS @ _cpos C! 1 EDPOS +! BLK!! 0
-    THEN UNTIL mode! SPC contents ;
-: handle ( c -- f )
-    DUP '0' '9' =><= IF num 0 EXIT THEN
-    DUP CMD 2+ C! CMD FIND IF EXECUTE ELSE DROP THEN
-    UPPER 'Q' = ;
+    1+ BLK( - _pos! ;

blk/129

@@ -1,13 +1,9 @@
-: bufp ( buf -- )
-    DUP 64 + SWAP DO
-        i C@ DUP 0x20 < IF DROP 0x20 THEN EMIT
-    LOOP ;
-: bufs
-    1 aty ." I: " IBUF bufp
-    2 aty ." F: " FBUF bufp ;
-: c<over KEY DUP EMIT DUP 0x0a = IF DROP 0x0d THEN ;
-: VE ['] c<over 0x08 ( C< override ) RAM+ !
-    clrscr 0acc 0 EDPOS ! contents
-    BEGIN status bufs setpos KEY handle UNTIL
-    0 0x08 RAM+ ! 19 aty ;
-
+: $R ( replace mode )
+    mode! 'R' EMIT
+    BEGIN setpos C< DUP 0xd = NOT IF
+        EDPOS @ _cpos C! 1 EDPOS +! BLK!! 0
+    THEN UNTIL mode! SPC contents ;
+: handle ( c -- f )
+    DUP '0' '9' =><= IF num 0 EXIT THEN
+    DUP CMD 2+ C! CMD FIND IF EXECUTE ELSE DROP THEN
+    UPPER 'Q' = ;

blk/130

@@ -0,0 +1,13 @@
+: bufp ( buf -- )
+    DUP 64 + SWAP DO
+        i C@ DUP 0x20 < IF DROP 0x20 THEN EMIT
+    LOOP ;
+: bufs
+    1 aty ." I: " IBUF bufp
+    2 aty ." F: " FBUF bufp ;
+: c<over KEY DUP EMIT DUP 0x0a = IF DROP 0x0d THEN ;
+: VE ['] c<over 0x08 ( C< override ) RAM+ !
+    clrscr 0acc 0 EDPOS ! contents
+    BEGIN status bufs setpos KEY handle UNTIL
+    0 0x08 RAM+ ! 19 aty ;
+