diff --git a/src/callback.c b/src/callback.c
index d64d9f18..eb929ea4 100644
--- a/src/callback.c
+++ b/src/callback.c
@@ -4010,43 +4010,8 @@ int rstate; /* (reduced state, without ShiftMask) */
    }
    if(key=='n' && rstate==0)              /* hierarchical netlist */
    {
-    int err = 0;
-    yyparse_error = 0;
     if(xctx->semaphore >= 2) break;
-    unselect_all(1);
-    if(set_netlist_dir(0, NULL)) {
-      dbg(1, "callback(): -------------\n");
-      if(xctx->netlist_type == CAD_SPICE_NETLIST)
-        err = global_spice_netlist(1, 1);
-      else if(xctx->netlist_type == CAD_VHDL_NETLIST)
-        err = global_vhdl_netlist(1, 1);
-      else if(xctx->netlist_type == CAD_VERILOG_NETLIST)
-        err = global_verilog_netlist(1, 1);
-      else if(xctx->netlist_type == CAD_TEDAX_NETLIST)
-        err = global_tedax_netlist(1, 1);
-      else
-        tcleval("tk_messageBox -type ok -parent [xschem get topwindow] "
-                "-message {Please Set netlisting mode (Options menu)}");
-
-      dbg(1, "callback(): -------------\n");
-    }
-    else {
-       if(has_x) tcleval("alert_ {Can not write into the netlist directory. Please check} {}");
-       else dbg(0, "Can not write into the netlist directory. Please check");
-       err = 1;
-    }
-    if(err) {
-      if(has_x) {
-        tclvareval(xctx->top_path, ".menubar entryconfigure Netlist -background red", NULL);
-        tclvareval("set tctx::", xctx->current_win_path, "_netlist red", NULL);
-      }
-
-    } else {
-      if(has_x) {
-        tclvareval(xctx->top_path, ".menubar entryconfigure Netlist -background Green", NULL);
-        tclvareval("set tctx::", xctx->current_win_path, "_netlist Green", NULL);
-      }
-    }
+    tcleval("xschem netlist -erc");
     break;
    }
    if(key=='N' && rstate == 0)              /* current level only netlist */
diff --git a/src/eval_expr.y b/src/eval_expr.y
index 8a94444b..4fa59958 100644
--- a/src/eval_expr.y
+++ b/src/eval_expr.y
@@ -93,7 +93,7 @@ exp:      NUM                { $$ = $1;}
 static void get_expr(double x)
 {
   char xx[100];
-  my_snprintf(xx, S(xx), "%.16g", x);
+  my_snprintf(xx, S(xx), "%.15g", x);
   my_mstrcat(_ALLOC_ID_, &ret, xx, NULL);
   strptr = str;
 }
diff --git a/src/scheduler.c b/src/scheduler.c
index 8cf1fc2c..913a5aac 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -3377,6 +3377,7 @@ int xschem(ClientData clientdata, Tcl_Interp *interp, int argc, const char * arg
         }
       }
       tclsetvar("show_infowindow_after_netlist", saveshow);
+      tcleval("eval_netlist_postprocess");
       set_netlist_dir(1, savedir);
       if(done_netlist) {
         if(messages) {
diff --git a/src/token.c b/src/token.c
index 7eb1576c..12926482 100644
--- a/src/token.c
+++ b/src/token.c
@@ -1216,7 +1216,7 @@ const char *subst_token(const char *s, const char *tok, const char *new_val)
   size_t token_pos=0, result_pos=0, result_save_pos = 0, tmp;
   int quote=0;
   int done_subst=0;
-  int escape=0, matched_tok=0;
+  int escape=0, matched_tok=0, removed_tok = 0;
   char *new_val_copy = NULL;
   size_t new_val_len;
 
@@ -1299,6 +1299,7 @@ const char *subst_token(const char *s, const char *tok, const char *new_val)
         } else { /* remove token (and value if any) */
           result_pos = result_save_pos;
           done_subst = 1;
+          removed_tok = 1;
         }
       }
       result_save_pos = result_pos;
@@ -1335,11 +1336,13 @@ const char *subst_token(const char *s, const char *tok, const char *new_val)
         } else { /* remove token (and value if any) */
           result_pos = result_save_pos;
           done_subst = 1;
+          removed_tok = 1;
         }
       }
       state=TOK_VALUE;
     } else if( state == TOK_VALUE && space && !quote && !escape) {
       state=TOK_BEGIN;
+      if(matched_tok && removed_tok && (c == '\n' || c == ' ') ) continue;
     }
     /* state actions */
     if(state == TOK_BEGIN) {
@@ -4488,7 +4491,7 @@ const char *translate(int inst, const char* s)
        }
        if(strstr(value1, "expr(") == value1) {
          char *ptr = strrchr(value1 + 5, ')');
-         dbg(0, "translate(): expr():%s\n", value1); 
+         dbg(1, "translate(): expr():%s\n", value1); 
          *ptr = '\0';
          my_strdup2(_ALLOC_ID_, &value1, eval_expr(
             translate3(value1 + 5, 1, xctx->inst[inst].prop_ptr, xctx->sym[xctx->inst[inst].ptr].templ, NULL)));
@@ -4514,11 +4517,18 @@ const char *translate(int inst, const char* s)
  } /* while(1) */
  dbg(2, "translate(): returning %s\n", result);
  my_free(_ALLOC_ID_, &token);
-
  /* if result is like: 'tcleval(some_string)' pass it thru tcl evaluation so expressions
   * can be calculated */
  my_strdup2(_ALLOC_ID_, &translated_tok, spice_get_node(tcl_hook2(result)));
  
+ if(strstr(translated_tok, "expr(") == translated_tok) {
+   char *ptr = strrchr(translated_tok + 5, ')');
+   dbg(1, "translate(): expr():%s\n", translated_tok);
+   *ptr = '\0';
+   my_strdup2(_ALLOC_ID_, &translated_tok, eval_expr(
+      translate3(translated_tok + 5, 1, xctx->inst[inst].prop_ptr, xctx->sym[xctx->inst[inst].ptr].templ, NULL)));
+ }
+
  return translated_tok;
 }
 
diff --git a/src/xschem.tcl b/src/xschem.tcl
index 6b337c68..b091f621 100644
--- a/src/xschem.tcl
+++ b/src/xschem.tcl
@@ -8925,6 +8925,15 @@ proc eval_postinit_commands {} {
   }
 }
 
+proc eval_netlist_postprocess {} {
+  global netlist_postprocess
+  if {[info exists netlist_postprocess]} {
+    if {[catch {uplevel #0 $netlist_postprocess} res]} {
+      puts "executing $netlist_postprocess:\n\n$res"
+    } 
+  }
+}
+
 proc setup_tcp_xschem { {port_number {}} } {
   global xschem_listen_port xschem_server_getdata
 
diff --git a/src/xschemrc b/src/xschemrc
index dfec3dfc..092298dd 100644
--- a/src/xschemrc
+++ b/src/xschemrc
@@ -545,7 +545,10 @@
 #   }
 # }
 
-
+###########################################################################
+#### TCL COMMANDS TO BE EXECUTED AFTER GENERATING NETLIST
+###########################################################################
+# set netlist_postprocess {textfile $netlist_dir/[xschem get netlist_name fallback]}
 
 ###########################################################################
 #### WEB URL DOWNLOAD HELPER APPLICATION
diff --git a/xschem_library/devices/pmos4.sym b/xschem_library/devices/pmos4.sym
index c899b2cf..1e417597 100644
--- a/xschem_library/devices/pmos4.sym
+++ b/xschem_library/devices/pmos4.sym
@@ -59,3 +59,4 @@ T {@#3:net_name} 25 1.25 0 0 0.15 0.15 {layer=15 hide=instance}
 T {tcleval(vgs=[to_eng \{@#1:spice_get_voltage - @#2:spice_get_voltage \}]
 vds=[to_eng \{@#0:spice_get_voltage - @#2:spice_get_voltage \}])} 2.5 20 0 1 0.05 0.05 {layer=15 }
 T {@spice_get_current} 35 20 0 0 0.15 0.15 {layer=17}
+T {expr( @w + @l )} 50 -30 0 0 0.2 0.2 {}