diff --git a/web/app/sketcher/constr/constraints.js b/web/app/sketcher/constr/constraints.js
index 791a9db6..aa7343c9 100644
--- a/web/app/sketcher/constr/constraints.js
+++ b/web/app/sketcher/constr/constraints.js
@@ -37,6 +37,7 @@ TCAD.constraints.Equal = function(params) {
 
 };
 
+/** @constructor */
 TCAD.constraints.ConstantWrapper = function(constr, mask) {
 
   this.params = [];
@@ -65,6 +66,7 @@ TCAD.constraints.ConstantWrapper = function(constr, mask) {
   }
 };
 
+/** @constructor */
 TCAD.constraints.Weighted = function(constr, weight) {
 
   this.params = constr.params;
diff --git a/web/app/sketcher/constr/solver.js b/web/app/sketcher/constr/solver.js
index 4a163da3..7c6ff674 100644
--- a/web/app/sketcher/constr/solver.js
+++ b/web/app/sketcher/constr/solver.js
@@ -224,8 +224,8 @@ TCAD.parametric.diagnose = function(sys) {
 
 TCAD.parametric.prepare = function(constrs, locked, aux, alg) {
 
-  this.lock1(constrs, aux);
-  var lockingConstrs = this.lock2Equals2(constrs, locked);
+  TCAD.parametric.lock1(constrs, aux);
+  var lockingConstrs = TCAD.parametric.lock2Equals2(constrs, locked);
   Array.prototype.push.apply( constrs, lockingConstrs );
   
   var sys = new TCAD.parametric.System(constrs);
diff --git a/web/app/sketcher/helpers.js b/web/app/sketcher/helpers.js
index c80c372b..94d74c95 100644
--- a/web/app/sketcher/helpers.js
+++ b/web/app/sketcher/helpers.js
@@ -5,7 +5,6 @@ TCAD.TWO.FilletTool = function(viewer) {
 
 TCAD.TWO.FilletTool.prototype.makeFillet = function(point1, point2) {
   function shrink(point1) {
-    point1.parent.a;
     if (point1.id === point1.parent.a.id) {
       var a = point1.parent.b;
       var b = point1.parent.a;
diff --git a/web/app/sketcher/io.js b/web/app/sketcher/io.js
index ce24f23b..d953bc46 100644
--- a/web/app/sketcher/io.js
+++ b/web/app/sketcher/io.js
@@ -336,7 +336,7 @@ TCAD.io.BBox = function() {
       this.checkCircBounds(obj.c.x, obj.c.y, obj.r.get());
     } else if (obj._class === T.CIRCLE) {
       this.checkCircBounds(obj.c.x, obj.c.y, obj.r.get());
-    } else if (obj._class === T.DIM || obj._class === T.HDIM || obj._class === T.VDIM) {
+//    } else if (obj._class === T.DIM || obj._class === T.HDIM || obj._class === T.VDIM) {
     }
   }
 
@@ -410,7 +410,7 @@ TCAD.IO.prototype.svgExport = function () {
         out.fline('<path d="M $ $ A $ $ 0 $ $ $ $" />', [obj.a.x, obj.a.y, r, r, dir, 1, obj.b.x, obj.b.y]);
       } else if (obj._class === T.CIRCLE) {
         out.fline('<circle cx="$" cy="$" r="$" />', [obj.c.x, obj.c.y, obj.r.get()]);
-      } else if (obj._class === T.DIM || obj._class === T.HDIM || obj._class === T.VDIM) {
+//      } else if (obj._class === T.DIM || obj._class === T.HDIM || obj._class === T.VDIM) {
       }
     }
     out.line('</g>');
@@ -555,7 +555,7 @@ TCAD.IO.prototype.dxfExport = function () {
         out.line("0");
         out.line("40");
         out.numberln(obj.r.get());
-      } else if (obj._class === T.DIM || obj._class === T.HDIM || obj._class === T.VDIM) {
+//      } else if (obj._class === T.DIM || obj._class === T.HDIM || obj._class === T.VDIM) {
       }
     }
   }