--- trunk/OOPSE/libBASS/parse_tree.c	2004/01/29 23:01:17	998
+++ trunk/OOPSE/libBASS/parse_tree.c	2004/05/11 04:21:52	1153
@@ -98,9 +98,9 @@ void walk_down( struct node_tag* the_node, struct name
 	break;
 
       case ATOM_HEAD:
-	if( the_namespc.type != MOLECULE_HEAD && the_namespc.type != RIGIDBODY_HEAD ){
+	if( the_namespc.type != MOLECULE_HEAD ){
 	     print_tree_error( the_node,
-			    "The atom block is not in a molecule or rigidBody namespace" );
+			    "The atom block is not in a molecule namespace" );
 	}
 	else{
 	  init_atom( the_node->index );
@@ -113,7 +113,7 @@ void walk_down( struct node_tag* the_node, struct name
       case RIGIDBODY_HEAD:
 	if( the_namespc.type != MOLECULE_HEAD ){
 	  print_tree_error( the_node,
-			    "The rigid body block is not in a molecule namespace" );
+			    "The RigidBody block is not in a Molecule namespace" );
 	}
 	else{
 	  init_rigidbody( the_node->index );
@@ -122,6 +122,19 @@ void walk_down( struct node_tag* the_node, struct name
 	  walk_down( the_node->stmt_list, current_namespc );
 	}
 	break;
+
+      case CUTOFFGROUP_HEAD:
+	if( the_namespc.type != CUTOFFGROUP_HEAD ){
+	  print_tree_error( the_node,
+			    "The CutoffGroup block is not in a Molecule namespace" );
+	}
+	else{
+	  init_cutoffgroup( the_node->index );
+	  current_namespc.index = the_node->index;
+	  current_namespc.type = the_node->type;
+	  walk_down( the_node->stmt_list, current_namespc );
+	}
+	break;
 	
       case BOND_HEAD:
 	if( the_namespc.type != MOLECULE_HEAD ){
@@ -192,15 +205,16 @@ void walk_down( struct node_tag* the_node, struct name
 	switch( the_namespc.type ){
 	case BOND_HEAD: // fall through
 	case BEND_HEAD: // fall through
-	case TORSION_HEAD: // same for the first three
+	case TORSION_HEAD: 
         case RIGIDBODY_HEAD:
+        case CUTOFFGROUP_HEAD: // same for the first four
 	  init_members( the_node, the_namespc );
 	  break;
 
 	default:
 	  print_tree_error( the_node, 
 			    "Members statement not in a bond, bend, "
-			    "torsion, or rigidBody." );
+			    "torsion, RigidBody, or CutoffGroup" );
 	  break;
 	}
 	break;
@@ -226,20 +240,20 @@ void walk_down( struct node_tag* the_node, struct name
 	break;
 
       case POSITION_STMT:
-	if( the_namespc.type != ATOM_HEAD && the_namespc.type != RIGIDBODY_HEAD){
+	if( the_namespc.type != ATOM_HEAD ){
 	  print_tree_error( the_node,
 			    "position statement is not located in an "
-			    "atom or rigidBody block" );
+			    "atom block" );
 	}
 	
 	init_position( the_node, the_namespc );
 	break;
 
       case ORIENTATION_STMT:
-	if( the_namespc.type != ATOM_HEAD && the_namespc.type != RIGIDBODY_HEAD){
+	if( the_namespc.type != ATOM_HEAD ){
 	  print_tree_error( the_node,
 			    "orientation statement is not located in an "
-			    "atom or rigidBody block" );
+			    "atom block" );
 	}
 	
 	init_orientation( the_node, the_namespc );
@@ -296,6 +310,12 @@ void print_tree_error( struct node_tag* err_node, char
 	     "Parse tree error: rigidBody head node error -> %s\n",
 	     err_msg );
     break;
+    
+  case CUTOFFGROUP_HEAD:
+    sprintf( painCave.errMsg,
+	     "Parse tree error: CutoffGroup head node error -> %s\n",
+	     err_msg );
+    break;
 
   case ATOM_HEAD:
     sprintf( painCave.errMsg,