Make (print) stop on CR

Lines edited with the Block editor end with 0xd and (print) spits
spurious CR when printing those lines.

Also, properly initialize ACC in BROWSE.

blk/060

@@ -4,7 +4,7 @@ I/O
                   result in n as well as whether parsing was a
                   success in f (false = failure, true =
                   success)
-(print)  a --     Print string at addr a.
+(print)  a --     Print string at addr a. Stops at 0x0 or 0xd.
 .        n --     Print n in its decimal form
 .x       n --     Print n's LSB in hex form. Always 2
                   characters.

blk/102

@@ -2,7 +2,8 @@
 1 5 LOADR+
 
 : BROWSE
-    L BEGIN
+    0 ACC ! L
+    BEGIN
         KEY CASE
             'Q' OF EXIT ENDOF
             'B' OF B ENDOF

blk/438

@@ -4,10 +4,10 @@
 
 : (print)
     BEGIN
-    C@+      ( a+1 c )
-    ( exit if null )
-    DUP NOT IF 2DROP EXIT THEN
-    EMIT     ( a )
+        C@+      ( a+1 c )
+        ( exit if null or 0xd )
+        DUP 13 = OVER NOT OR IF 2DROP EXIT THEN
+        EMIT     ( a )
     AGAIN
 ;