diff --git a/app/src/gbs3/.project b/app/src/gbs3/.project
index 889c10ad7..610ed4fe5 100644
--- a/app/src/gbs3/.project
+++ b/app/src/gbs3/.project
@@ -8,8 +8,8 @@ Component=gb.eval
 Component=gb.pcre
 Description="Gambas Script"
 Authors="Fabien Bodard, Benoit Minisini, Brian G"
-Arguments=[["--help"],["--use","'gb.notify,gb.web'","-e","For i as Integer = 0 To 10:Print \"Hello World\":Next"],["~/bin/who"],["-c","-T","~/bin/mytest"],["-v","TestApp"],["--verbose","TestAppWithMain"],["--verbose","TestLazyApp"],["-c","~/testerror.gbs"],["~/Scripts/TestQuoteAtEnd"],["-c","~/Scripts/AForm"],["-c","-v","-w","~/Scripts/GambasHelpSearch"],["-c","-v","-w","~/Scripts/AMain"],["-c","-v","-w","~/Scripts/gshoutput"],["-c","-v","-w","~/Scripts/TestSets/TestWebApp.gbs"],["--convert-project","~/Projects/TestPrograms/testerror"],["--convert-project","~/Projects/TestPrograms/testusingtxthighlight","~/Scripts/TestSets"],["-c","-v","~/Scripts/TestSets/testusingtxthighlight.gbs"],["-l","library"],["-c","-v","-w","~/Scripts/TestScripterNoMain"],["-c","-v","-w","~/Scripts/TestGUI.gbs"],["-c","-v","-w","~/Scripts/TestSets/CPU_Test.gbs"],["-c","-v","-w","~/Scripts/TestSets/TestWebPage.gbs"],["-c","-v","-w","--convert-script","~/Scripts/TestSets/CPU_Test.gbs","~/Scripts"],["-c","-v","-w","~/Scripts/CPU_Test"],["-c","-v","-w","-p","~/Scripts/TestPlugin","~/myplugins"],["-c","-v","-w","~/Scripts/RunComponent"],["-c","-v","-w","~/Scripts/testshell.gbs"],["-v","~/Projects/TestTimer"],["-c","-v","-w","~/gbs3testwithclass.gbs"],["-c","-v","-w","/home/brian/Scripts/testLocalStatic.gbs"]]
-CurrentArgumentList=["-c","-v","-w","/home/brian/Scripts/testLocalStatic.gbs"]
+Arguments=[["--help"],["--use","'gb.notify,gb.web'","-e","For i as Integer = 0 To 10:Print \"Hello World\":Next"],["~/bin/who"],["-c","-T","~/bin/mytest"],["-v","TestApp"],["--verbose","TestAppWithMain"],["--verbose","TestLazyApp"],["-c","~/testerror.gbs"],["~/Scripts/TestQuoteAtEnd"],["-c","~/Scripts/AForm"],["-c","-v","-w","~/Scripts/GambasHelpSearch"],["-c","-v","-w","~/Scripts/AMain"],["-c","-v","-w","~/Scripts/gshoutput"],["-c","-v","-w","~/Scripts/TestSets/TestWebApp.gbs"],["--convert-project","~/Projects/TestPrograms/testerror"],["--convert-project","~/Projects/TestPrograms/testusingtxthighlight","~/Scripts/TestSets"],["-c","-v","~/Scripts/TestSets/testusingtxthighlight.gbs"],["-l","library"],["-c","-v","-w","~/Scripts/TestScripterNoMain"],["-c","-v","-w","~/Scripts/TestGUI.gbs"],["-c","-v","-w","~/Scripts/TestSets/CPU_Test.gbs"],["-c","-v","-w","~/Scripts/TestSets/TestWebPage.gbs"],["-c","-v","-w","--convert-script","~/Scripts/TestSets/CPU_Test.gbs","~/Scripts"],["-c","-v","-w","~/Scripts/CPU_Test"],["-c","-v","-w","-p","~/Scripts/TestPlugin","~/myplugins"],["-c","-v","-w","~/Scripts/RunComponent"],["-c","-v","-w","~/Scripts/testshell.gbs"],["-v","~/Projects/TestTimer"],["-c","-v","-w","~/gbs3testwithclass.gbs"],["-c","-v","-w","/home/brian/Scripts/testLocalStatic.gbs"],["-c","-v","-w","TestExternStructNoMain.gbs"],["-c","-v","-w","TestExternStructWithMain.gbs"]]
+CurrentArgumentList=["-c","-v","-w","TestExternStructWithMain.gbs"]
 TabSize=2
 Translate=1
 Language=en_US
diff --git a/app/src/gbs3/.src/Context.class b/app/src/gbs3/.src/Context.class
index 7230b1fee..8fae7d4b8 100644
--- a/app/src/gbs3/.src/Context.class
+++ b/app/src/gbs3/.src/Context.class
@@ -13,12 +13,13 @@ Public $bArchiveOutput As Boolean = False         ' Indicates that the user want
 
 Public $bScriptSourceStdIn As Boolean = False  ' If file name is - or no filename is provided  input from file.in(stdin)
 
-Public $sPreambleHeader As String                        ' contains comments and such to be put before the file
+Public $sPreambleHeader As String                         ' contains comments and such to be put before the file
 Public $sProgramHeader As String                          ' Contains statements and variable definitions needed before pubic sub main is defined
+Public $sExternals As String                              ' Contains all the externals defined in a script
 Public $sCompilerOptions As String                        ' Contains all the compiler options -- fast, unsafe etc
-Public $sStructures As String                                     ' Public structs that are global and outside and before the public sub main definition
-Public $sFinalProgram As String                               ' The final program Assembled from the script file to be written before compile is invoked
-Public $bClassAsStartup As Boolean = False         ' This indicates that the startup is a class not a module we create
+Public $sStructures As String                             ' Public structs that are global and outside and before the public sub main definition
+Public $sFinalProgram As String                           ' The final program Assembled from the script file to be written before compile is invoked
+Public $bClassAsStartup As Boolean = False                ' This indicates that the startup is a class not a module we create
 
 Public $bBuildOnly As Boolean                               ' add support to have scripter build the project only and print out the source files
 'Public $bPrecompiler As Boolean                          ' precompiler is enabled on the command line programs {i}var1 = 3 -> Dim Var1 as integer : var1 = 3
diff --git a/app/src/gbs3/.src/GenerateFiles.module b/app/src/gbs3/.src/GenerateFiles.module
index 9a33cd2d6..11d62d709 100644
--- a/app/src/gbs3/.src/GenerateFiles.module
+++ b/app/src/gbs3/.src/GenerateFiles.module
@@ -41,6 +41,9 @@ Public Sub _Call($oContext As Context, Path As String, sPrjPath As String)
   'If Not cReader.bModuleStartup Then 
     If cReader.IsMainDefined() Then
       $oContext.$sFinalProgram = cReader.GetProgram()
+      Verbose("Before Compile--------------------------------------------------")
+      Verbose(MakeListing.GenListing($oContext, $oContext.$sFinalProgram))
+      Verbose("_____________________________________________")
     Else If cReader.HasPublicOrSub() Then
       cReader.DisplayWarnings()
       If $oContext.$bAllowLazyScript Then
diff --git a/app/src/gbs3/.src/GenerateFromLazyScript.module b/app/src/gbs3/.src/GenerateFromLazyScript.module
index 1610d16be..ccfa55d14 100644
--- a/app/src/gbs3/.src/GenerateFromLazyScript.module
+++ b/app/src/gbs3/.src/GenerateFromLazyScript.module
@@ -1,8 +1,8 @@
 ' Gambas module file
 
-Private aDefWords As Collection = ["PUBLIC": True, "STATIC": True, "STRUCT": True, "FAST": True, "UNSAFE": True, "PRIVATE": True, "ENUM": True]
+Private aDefWords As Collection = ["PUBLIC": True, "STATIC": True, "STRUCT": True, "FAST": True, "UNSAFE": True, "PRIVATE": True, "ENUM": True, "EXTERN": True, "CONST": True]
 Private aDefFunc As Collection = ["SUB": True, "PROCEDURE": True, "FUNCTION": True]
-Private aSpecial As Collection = ["STRUCT": True, "ENUM": True]
+Private aSpecial As Collection = ["STRUCT": True, "ENUM": True, "EXTERN": True, "CONST": True]
 
 Private $iAdjustedOffset As Integer
 
@@ -45,12 +45,21 @@ Public Sub _call(oContext As Context, Program As Reader) As String
          If s = "ENUM" Then
             Dim DefEnum As String = ProcessVariable(Program, i - $iAdjustedOffset)
             If Upper(DefEnum) Begins "ENUM" Then DefEnum = "Public " & DefEnum
-            DefOutPut &= DefEnum & "\n"
+            oContext.$sProgramHeader &= DefEnum & "\n"
+            Break
+          Else If s = "CONST" Then
+            Dim DefConst As String = ProcessVariable(Program, i - $iAdjustedOffset)
+            If Upper(DefCONST) Begins "CONST" Then DefConst = "Public " & DefConst
+            oContext.$sProgramHeader &= DefConst & "\n"
+            Break
+         Else If s = "EXTERN" Then
+            Dim DefExtern As String = AdjustProgram(Program, i - $iAdjustedOffset, i - $iAdjustedOffset)
+            oContext.$sExternals &= DefExtern & "\n"
             Break
          Else
             Dim DefStruct As String = ProcessBlock(Program, i - $iAdjustedOffset, ["END", "STRUCT"])
             If Upper(DefStruct) Begins "STRUCT" Then DefStruct = "Public " & DefStruct
-            DefOutPut &= DefStruct & "\n"
+            oContext.$sStructures &= DefStruct & "\n"
             Break
          Endif
       Endif
@@ -59,7 +68,7 @@ Public Sub _call(oContext As Context, Program As Reader) As String
   
   MainOutPut &= Program.ProgramLines.Join("\n") & "\nEND\n"
   Verbose("Before Compile--------------------------------------------------")
-  Verbose(MakeListing.GenListing(oContext, DefOutput & MainOutPut))
+  Verbose(MakeListing.GenListing(oContext, oContext.$sProgramHeader & oContext.$sStructures & oContext.$sExternals & DefOutput & MainOutPut))
   Verbose("_____________________________________________")
   Return DefOutput & MainOutPut
   
diff --git a/app/src/gbs3/.src/MakeVirtualProject.module b/app/src/gbs3/.src/MakeVirtualProject.module
index 943e2b334..f8d441a3c 100644
--- a/app/src/gbs3/.src/MakeVirtualProject.module
+++ b/app/src/gbs3/.src/MakeVirtualProject.module
@@ -14,6 +14,7 @@ Public Sub _Call($oContext As Context, sPath As String, Optional sProjectLocatio
   $oContext.$sStructures = ""
   $oContext.$sProgramHeader = ""
   $oContext.$sCompilerOptions = ""
+  $oContext.$sExternals = ""
 
   If $oContext.$bCreateProject Then 
     Dim sPathInfo As String = File.Dir(sPath)
@@ -102,6 +103,7 @@ Public Sub _Call($oContext As Context, sPath As String, Optional sProjectLocatio
   If $oContext.$sPreambleHeader <> "" Then Print #$hOutFile, $oContext.$sPreambleHeader
   If $oContext.$sCompilerOptions <> "" Then Print #$hOutFile, $oContext.$sCompilerOptions
   If $oContext.$sStructures <> "" Then Print #$hOutFile, $oContext.$sStructures
+  If $oContext.$sExternals <> "" Then Print #$hOutFile, $oContext.$sExternals
   If $oContext.$sProgramHeader <> "" Then Print #$hOutFile, $oContext.$sProgramHeader
   If $oContext.$bPlugin Then Print #$hOutFile, PluginInfo()
   If $oContext.$sFinalProgram <> "" Then Print #$hOutFile, $oContext.$sFinalProgram
diff --git a/app/src/gbs3/.src/Reader.class b/app/src/gbs3/.src/Reader.class
index da29c3890..4c32244cf 100644
--- a/app/src/gbs3/.src/Reader.class
+++ b/app/src/gbs3/.src/Reader.class
@@ -99,7 +99,8 @@ Private Sub GetFile(SourceFile As String) As String
   
 End
 
-Private $cKeywords As Collection = ["PRIVATE": True, "PUBLIC": True, "STATIC": True, "SUB": True, "FUNCTION": True, "PROCEDURE": True, "STRUCT": True, "ENUM": True, "CLASSREF": True]
+Private $cKeywords As Collection = ["PRIVATE": True, "PUBLIC": True, "STATIC": True, "SUB": True, "FUNCTION": True, "PROCEDURE": True, "STRUCT": True, "ENUM": True, "CLASSREF": True,
+                                    "EXTERN": True, "CONST": True]
 Private $cFuncDef As Collection = ["SUB": True, "FUNCTION": True, "PROCUDURE": True]
 Private $cAllowedInSub As Collection = ["STATIC": True]
 
diff --git a/app/src/gbs3/TestExternStructNoMain.gbs b/app/src/gbs3/TestExternStructNoMain.gbs
new file mode 100644
index 000000000..3e042b2a4
--- /dev/null
+++ b/app/src/gbs3/TestExternStructNoMain.gbs
@@ -0,0 +1,62 @@
+#!/usr/bin/gbs3
+' Gambas module file
+
+Public Struct newit
+  x[20] As Byte
+End Struct
+
+Public Struct byeit
+  c As Integer
+  b As Float
+  e[20] As Struct Newit 
+End Struct
+
+Public Struct Hello
+  b As Integer
+  c As Integer
+  d As Long
+  e As Float
+  f As Struct Byeit
+  g[20] As Struct Byeit
+End Struct
+
+Enum er, et, ey = 20
+
+' We will use memcpy for two purposes , get the real address of the data, actually copy the data
+Extern memcpy(dest As Hello, src As Hello, len As Integer) As Pointer In "libc:6"
+Extern Arraymemcpy(dest As Pointer, src As Pointer, len As Integer) As Pointer In "libc:6" Exec "memcpy"
+Const unitcount As Integer = 20 
+
+Public b As Struct Hello
+Public c[20] As Struct Hello 
+
+Sub test()
+    'Static xx As Struct Hello
+    Print "Test Sub"
+End
+
+'Public Sub Main()
+  b.b = 43
+  Dim a As Variant = b
+  Dim e As Hello = c[1]  ' these just set pointers
+  Dim f As Hello = c[2]
+  Dim g As Hello = c[3]
+  g.d = 500
+  g.e = 3.67
+  c[3].g[0].e[0].x[0] = 32
+  ' Calc Struct length do pointer math c[1]-c[0]
+  Dim iStructLen As Integer = memcpy(c[1], c[1], 0) - memcpy(c[0], c[0], 0)
+  
+  Print "Struct len = "; iStructLen, "Dest Values before copy ", f.d, f.e, f.g[0].e[0].x[0]
+  'Copy one entry to another
+  memcpy(f, g, iStructLen)
+  Print c[2].d, c[2].e, c[2].g[0].e[0].x[0] ' g = c[3] f = c[2]
+  a.b = 45
+  
+  Print a.b, b.b
+  ' Display the actual address Of Each element And root
+  Print memcpy(a, a, 0), memcpy(b, b, 0), arraymemcpy(VarPtr(c), VarPtr(c), 0), memcpy(e, e, 0), memcpy(f, f, 0), memcpy(g, g, 0)
+  Print VarPtr(a), VarPtr(b), VarPtr(c)
+  Print "Hello world"
+
+'End
diff --git a/app/src/gbs3/TestExternStructWithMain.gbs b/app/src/gbs3/TestExternStructWithMain.gbs
new file mode 100644
index 000000000..e27cac99a
--- /dev/null
+++ b/app/src/gbs3/TestExternStructWithMain.gbs
@@ -0,0 +1,62 @@
+#!/usr/bin/gbs3
+' Gambas module file
+
+Public Struct newit
+  x[20] As Byte
+End Struct
+
+Public Struct byeit
+  c As Integer
+  b As Float
+  e[20] As Struct Newit 
+End Struct
+
+Public Struct Hello
+  b As Integer
+  c As Integer
+  d As Long
+  e As Float
+  f As Struct Byeit
+  g[20] As Struct Byeit
+End Struct
+
+Enum er, et, ey = 20
+
+' We will use memcpy for two purposes , get the real address of the data, actually copy the data
+Extern memcpy(dest As Hello, src As Hello, len As Integer) As Pointer In "libc:6"
+Extern Arraymemcpy(dest As Pointer, src As Pointer, len As Integer) As Pointer In "libc:6" Exec "memcpy"
+Const unitcount As Integer = 20 
+
+Public b As Struct Hello
+Public c[20] As Struct Hello 
+
+Sub test()
+    'Static xx As Struct Hello
+    Print "Test Sub"
+End
+
+Public Sub Main()
+  b.b = 43
+  Dim a As Variant = b
+  Dim e As Hello = c[1]  ' these just set pointers
+  Dim f As Hello = c[2]
+  Dim g As Hello = c[3]
+  g.d = 500
+  g.e = 3.67
+  c[3].g[0].e[0].x[0] = 32
+  ' Calc Struct length do pointer math c[1]-c[0]
+  Dim iStructLen As Integer = memcpy(c[1], c[1], 0) - memcpy(c[0], c[0], 0)
+  
+  Print "Struct len = "; iStructLen, "Dest Values before copy ", f.d, f.e, f.g[0].e[0].x[0]
+  'Copy one entry to another
+  memcpy(f, g, iStructLen)
+  Print c[2].d, c[2].e, c[2].g[0].e[0].x[0] ' g = c[3] f = c[2]
+  a.b = 45
+  
+  Print a.b, b.b
+  ' Display the actual address Of Each element And root
+  Print memcpy(a, a, 0), memcpy(b, b, 0), arraymemcpy(VarPtr(c), VarPtr(c), 0), memcpy(e, e, 0), memcpy(f, f, 0), memcpy(g, g, 0)
+  Print VarPtr(a), VarPtr(b), VarPtr(c)
+  Print "Hello world"
+
+End