diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 67e97fc3d1..cdf4b0c7d7 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -1,3 +1,12 @@
+19990613 23:00 CET Eddie Runia
+  * source/rtl/environ.c
+    __Run() added for Borland and DJGPP
+  + tests/working/dosshell.prg
+    Only for DOS, OS/2 & Windows
+  + tests/working/cmphello.prg
+    This file compiles hello. Also usuable for Linux / Unix, if the system()
+    command functions on their compilers :-)
+
 19990613 16:35 CET Eddie Runia
   * tests/working/strip.prg; tests/working/inherit.prg;
     tests/working/dynobj.prg
diff --git a/harbour/source/rtl/environ.c b/harbour/source/rtl/environ.c
index be7c80d157..8226b17e2a 100644
--- a/harbour/source/rtl/environ.c
+++ b/harbour/source/rtl/environ.c
@@ -11,6 +11,7 @@
 
 #if defined(__TURBOC__) || defined(__BORLANDC__)  || defined(__DJGPP__)
   #include <dos.h>
+  #include <stdlib.h>
 #endif
 
 #ifdef __WATCOMC__
@@ -28,11 +29,13 @@
   #endif
 #endif
 
+HARBOUR HB___RUN(void);
 HARBOUR HB_GETENV(void);
 HARBOUR HB_OS(void);
 HARBOUR HB_VERSION(void);
 
 static SYMBOL symbols[] = {
+{ "__RUN"  , FS_PUBLIC, HB___RUN  , 0 },
 { "GETENV" , FS_PUBLIC, HB_GETENV , 0 },
 { "OS"     , FS_PUBLIC, HB_OS     , 0 },
 { "VERSION", FS_PUBLIC, HB_VERSION, 0 }
@@ -212,3 +215,41 @@ HARBOUR HB_GETENV(void)
    else
       _retc("");
 }
+
+/*
+ * $FunctionName$
+ *    __RUN
+ * $Syntax$
+ *    __RUN( <cCommand> )
+ * $Argument$
+ *    <cCommand> Command to execute
+ * $Description$
+ *    This command runs an external program. Please make sure that you have
+ *    enough free memory to be able to run the external program.
+ *    Do not use it to run Terminate and Stay Resident programs (in case of DOS)
+ *    since it cause several problems
+ * $Examples$
+ *    __Run( "edit "+cMyTextFile )      // Runs an external editor
+ *    __Run( "command" )                // Gives a DOS shell (DOS only)
+ * $Files$
+ *    source/rtl/environ.c
+ *    Run an external program
+ * $See also$
+ *    ErrorLevel() ??   // TO DO : Is this correct ?
+ */
+HARBOUR HB___RUN( void )
+{
+#if defined(__TURBOC__) || defined(__BORLANDC__)  || defined(__DJGPP__)
+   if( _pcount() == 1 )                         /* Parameter passed         */
+   {
+      system( _parc( 1 ) );
+   }
+   else
+   {
+      PHB_ITEM pError = _errNew();
+      _errPutDescription( pError, "RUN: Incorrect number of arguments" );
+      _errLaunch( pError );
+      _errRelease( pError );
+   }
+#endif
+}
diff --git a/harbour/tests/working/cmphello.prg b/harbour/tests/working/cmphello.prg
new file mode 100644
index 0000000000..5870b23735
--- /dev/null
+++ b/harbour/tests/working/cmphello.prg
@@ -0,0 +1,19 @@
+//
+// Compile Hello
+//
+// This program compiles hello.prg
+//
+function Main()
+
+   local cOs := Upper( OS() )
+
+   QOut( "About to compile Hello.prg" )
+   QOut()
+   if at( "WINDOWS", cOs ) != 0 .or. at( "DOS", cOs ) != 0 .or. ;
+      at( "OS/2", cOs )                         // OS/2, DOS, Windows version
+      __Run( "..\..\bin\harbour.exe hello.prg /gHRB" )
+   else                                         // Unix / Linux version
+      __Run( "../../bin/harbour.exe hello.prg /gHRB" )
+   endif
+   QOut( "Finished compiling" )
+return nil
diff --git a/harbour/tests/working/dosshell.prg b/harbour/tests/working/dosshell.prg
new file mode 100644
index 0000000000..50f8d8fb8f
--- /dev/null
+++ b/harbour/tests/working/dosshell.prg
@@ -0,0 +1,20 @@
+//NOTEST             // It is very frustrating if this one is auto-tested
+//
+// DosShell
+//
+// This program shell to DOS
+//
+// Warning : DOS only
+//
+function Main()
+
+   local cOs := Upper( OS() )
+
+   if at( "WINDOWS", cOs ) != 0 .or. at( "DOS", cOs ) != 0
+      QOut( "About to shell to DOS.." )
+      __Run( GetEnv("COMSPEC") )
+      QOut( "Hey, I am back !" )
+   else
+      QOut( "Sorry this program is for Windows and DOS only" )
+   endif
+return nil