diff --git a/doc/ChangeLog.txt b/doc/ChangeLog.txt
index 6b57282c..90938895 100644
--- a/doc/ChangeLog.txt
+++ b/doc/ChangeLog.txt
@@ -82,18 +82,31 @@ supports the SPF format.
 
 ....
 
+The make_instance command now takes a single instance name argument
+and returns the instance.
+
+  make_instance instance_name
+
 The make_net command now takes a single net name argument and returns
 the net.
 
+  make_net net_name
+
 The delete_instance command deletes a single instance instead of a list
 of instances.
 
+  delete_instance instance
+
 The delete_net command deletes a single net instead of a list
 of nets.
 
+  delete_net net
+
 The disconnect_pins command is renamed disconnect_pin and disconnects a
 single pin.
 
+  disconnect_pin net pin
+
 Release 1.11.0 2017/08/18
 -------------------------
 
diff --git a/doc/OpenSTA.odt b/doc/OpenSTA.odt
index 42842e08..14c08383 100644
Binary files a/doc/OpenSTA.odt and b/doc/OpenSTA.odt differ
diff --git a/tcl/NetworkEdit.tcl b/tcl/NetworkEdit.tcl
index e46b5a45..14453455 100644
--- a/tcl/NetworkEdit.tcl
+++ b/tcl/NetworkEdit.tcl
@@ -202,37 +202,34 @@ proc make_instance { inst_path lib_cell } {
 
 ################################################################
 
-proc make_net { net_name } {
+proc make_net { net_path } {
   # Copy backslashes that will be removed by foreach.
-  set net_name [string map {\\ \\\\} $net_name]
+  set net_path [string map {\\ \\\\} $net_path]
   set path_regexp [path_regexp]
-  if {[regexp $path_regexp $net_name ignore path_name net_name]} {
+  if {[regexp $path_regexp $net_path ignore path_name net_name]} {
     set parent [find_instance $path_name]
     if { $parent == "NULL" } {
       return 0
     }
   } else {
     set parent [top_instance]
+    set net_name $net_path
   }
   return [make_net_cmd $net_name $parent]
 }
 
 ################################################################
 
-proc replace_cell { instances lib_cell } {
+proc replace_cell { instance lib_cell } {
   set cell [get_lib_cell_warn "lib_cell" $lib_cell]
   if { $cell != "NULL" } {
-    set insts [get_instances_error "instances" $instances]
-    foreach inst $insts {
-      set inst_cell [$inst liberty_cell]
-      if { $inst_cell == "NULL" \
-	     || ![equiv_cell_ports $inst_cell $cell] } {
-	return 0
-      }
-    }
-    foreach inst $insts {
-      replace_cell_cmd $inst $cell
+    set inst [get_instance_error "instance" $instance]
+    set inst_cell [$inst liberty_cell]
+    if { $inst_cell == "NULL" \
+	   || ![equiv_cell_ports $inst_cell $cell] } {
+      return 0
     }
+    replace_cell_cmd $inst $cell
     return 1
   } else {
     return 0
diff --git a/tcl/Sta.tcl b/tcl/Sta.tcl
index 993f5f22..c4968078 100644
--- a/tcl/Sta.tcl
+++ b/tcl/Sta.tcl
@@ -677,23 +677,23 @@ proc unset_timing_derate { args } {
 #  
 ################################################################
 
-define_sta_cmd_args "connect_pin" {net pins}
+define_sta_cmd_args "connect_pin" {net pin}
 # deprecated 2.0.16 05/02/2019
 define_sta_cmd_args "connect_pins" {net pins}
 
-define_sta_cmd_args "delete_instance" {cell_list}
+define_sta_cmd_args "delete_instance" {inst}
 
-define_sta_cmd_args "delete_net" {net_list}
+define_sta_cmd_args "delete_net" {net}
 
 define_sta_cmd_args "disconnect_pin" {net -all|pin}
 # deprecated 2.0.16 05/02/2019
 define_sta_cmd_args "disconnect_pins" {net -all|pins}
 
-define_sta_cmd_args "make_instance" {inst_names lib_cell}
+define_sta_cmd_args "make_instance" {inst_path lib_cell}
 
 define_sta_cmd_args "make_net" {}
 
-define_sta_cmd_args "replace_cell" {instances lib_cell}
+define_sta_cmd_args "replace_cell" {instance lib_cell}
 
 define_sta_cmd_args "insert_buffer" {buffer_name buffer_cell net load_pins\
 				       buffer_out_net_name}