Index: default.heromeshrc
==================================================================
--- default.heromeshrc
+++ default.heromeshrc
@@ -168,10 +168,11 @@
 ?.editKey.space: ^c
 ?.editKey.return: ^e
 ?.editKey.f1: select 'im',:Import_Level;
 ?.editKey.f2: select 'ex',:Export_Level;
 ?.editKey.escape: ^Z
+?.editKey.shift.B: select '^a',xy(x,y) from playfield where inrect(x,y) and (rect_x0()=x or rect_x1()=x or rect_y0()=y or rect_y1()=y);
 ?.editKey.shift.D: delete from objects where inrect(x,y);
 ?.editKey.shift.F: select '^a',xy(x,y) from playfield where inrect(x,y);
 ?.editClick.left: ^a
 ?.editClick.ctrl.left: select 'em',id from objects where x=$X and y=$Y and up is null;
 ?.editClick.alt.left: ^u

Index: edit.doc
==================================================================
--- edit.doc
+++ edit.doc
@@ -239,18 +239,20 @@
   SPACE     Select class/image
   RETURN    Edit Misc/Dir of current MRU
   UP/DOWN   Select previous/next MRU
   1-9       Select MRU
   ESC       Cancel selection rectangle
+  SHIFT+B   Fill border of selection rectangle with current MRU
   SHIFT+D   Delete all objects in selection rectangle
   SHIFT+F   Fill selection rectangle with current MRU
 
 Mouse (in grid):
 
-  LEFT         Add object
-  CTRL+LEFT    Edit Misc/Dir of object
-  ALT+LEFT     Add object (allow duplicate)
-  SHIFT+LEFT   Set top corner of selection rectangle
-  RIGHT        Delete object
-  CTRL+RIGHT   Copy object to MRU
-  SHIFT+RIGHT  Set bottom corner of selection rectangle
+  LEFT          Add object
+  CTRL+LEFT     Edit Misc/Dir of object
+  ALT+LEFT      Add object (allow duplicate)
+  SHIFT+LEFT    Set top corner of selection rectangle
+  SHIFT+MIDDLE  Make 1x1 selection rectangle
+  RIGHT         Delete object
+  CTRL+RIGHT    Copy object to MRU
+  SHIFT+RIGHT   Set bottom corner of selection rectangle