doc bbox

doc/texinfo/gmsh.texi

@@ -949,6 +949,7 @@ List of expressions are also widely used, and are defined as:
   Point @{ @var{expression} @} |
   <Physical> Point|Line|Surface|Volume "*" |
   Point|Line|Surface|Volume In BoundingBox @{ @var{expression-list} @} |
+  BoundingBox Point|Line|Surface|Volume @{ @var{expression} @} |
   Physical Point|Line|Surface|Volume @{ @var{expression-list} @}
 @c  @var{duplicata} - already implemented: should we explain this?
 @end example
@@ -969,11 +970,12 @@ permit to reference an expression sublist (whose elements are those
 corresponding to the indices provided by the @var{expression-list}).
 The next two cases permit to retrieve the indices of entities created
 through geometrical transformations and extrusions (see
-@ref{Transformations}, and @ref{Extrusions}). The last three cases
-permit to retrieve the coordinates of a given geometry point
-(@pxref{Points}), to retrieve the id numbers of all points, lines,
-surfaces or volumes in the model, or to retrieve the elementary entities
-making up physical groups.
+@ref{Transformations}, and @ref{Extrusions}). The next two cases allow
+to retrieve antities in a given bounding box, or get the bounding box of
+a given entity. The last three cases permit to retrieve the coordinates
+of a given geometry point (@pxref{Points}), to retrieve the id numbers
+of all points, lines, surfaces or volumes in the model, or to retrieve
+the elementary entities making up physical groups.
 
 To see the practical use of such expressions, have a look at the first
 couple of examples in @ref{Tutorial}. Note that, in order to lighten the