diff -ur C:\FGCVS\terragear-cs\src\Airports\GenAirports\main.cxx C:\FG\27\terragear-cs\src\Airports\GenAirports\main.cxx
--- C:\FGCVS\terragear-cs\src\Airports\GenAirports\main.cxx	Thu Feb 19 12:01:34 2009
+++ C:\FG\27\terragear-cs\src\Airports\GenAirports\main.cxx	Wed Feb 25 20:10:36 2009
@@ -247,7 +247,8 @@
     string last_apt_info = "";
     string last_apt_type = "";
     string line;
-    char tmp[2048];
+    int counter = 0;
+    static char tmp[2048];
 
     while ( ! in.eof() ) {
 	in.getline(tmp, 2048);
@@ -285,8 +286,9 @@
             
             string id = token[4];
             int elev = atoi( token[1].c_str() );
+            counter++;
             SG_LOG( SG_GENERAL, SG_INFO, "Next airport = " << id << " "
-                    << elev );
+                    << elev << " no " << counter );
 
             if ( !last_apt_id.empty()) {
                 if ( runways_list.size() ) {
@@ -304,7 +306,7 @@
 
                     if ( ready_to_go ) {
                         // check point our location
-                        char command[256];
+                        static char command[256];
                         sprintf( command,
                                  "echo before building %s >> last_apt",
                                  last_apt_id.c_str() );
@@ -442,7 +444,7 @@
         }
     }
 
-    SG_LOG(SG_GENERAL, SG_INFO, "[FINISHED CORRECTLY]");
+    SG_LOG(SG_GENERAL, SG_INFO, "[FINISHED CORRECTLY] count = " << counter );
 
     return 0;
 }
diff -ur C:\FGCVS\terragear-cs\src\Airspace\airspace.cxx C:\FG\27\terragear-cs\src\Airspace\airspace.cxx
--- C:\FGCVS\terragear-cs\src\Airspace\airspace.cxx	Thu Feb 19 12:01:34 2009
+++ C:\FG\27\terragear-cs\src\Airspace\airspace.cxx	Wed Feb 25 14:50:12 2009
@@ -76,15 +76,22 @@
 //////                                                                                  //////
 //////////////////////////////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////////////////////
-                                                                      
+
+#ifdef _MSC_VER
+#include <iostream>
+#include <fstream>
+#else
 #include <iostream.h>
 #include <fstream.h>
+#endif
 #include <string>
 #include <stdio.h>
 
 #include <math.h>
 
+#ifndef _MSC_VER
 #include <netinet/in.h>
+#endif
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -95,6 +102,16 @@
 #include <simgear/math/sg_geodesy.hxx>
 #include <simgear/misc/sg_path.hxx>
 /************************************************************/
+#ifdef _MSC_VER
+static double trunc( double val ) { return floor(val); }
+static double round( double val ) { 
+   if( val < 0.0 )
+      return ceil(val);
+   else
+      return floor(val);
+}
+using std::cout;
+#endif
 
 using std::string;
 
diff -ur C:\FGCVS\terragear-cs\src\BuildTiles\Clipper\testclipper.cxx C:\FG\27\terragear-cs\src\BuildTiles\Clipper\testclipper.cxx
--- C:\FGCVS\terragear-cs\src\BuildTiles\Clipper\testclipper.cxx	Thu Feb 19 12:01:35 2009
+++ C:\FG\27\terragear-cs\src\BuildTiles\Clipper\testclipper.cxx	Fri Feb 27 19:54:15 2009
@@ -30,6 +30,12 @@
 using std::cout;
 using std::endl;
 
+#define set_unix_sep(s) {    \
+   size_t fnd = s.find('\\'); \
+   while( fnd != -1 ) {       \
+      s.replace(fnd, 1, "/"); \
+      fnd = s.find('\\'); }}
+
 
 int main( int argc, char **argv ) {
     point2d global_min, global_max;
@@ -51,6 +57,9 @@
     // process all specified polygon files
     for ( int i = 1; i < argc; i++ ) {
 	string full_path = argv[i];
+#ifdef _MSC_VER
+   set_unix_sep(full_path);
+#endif
 
 	// determine bucket for this polygon
 	int pos = full_path.rfind("/");
@@ -64,7 +73,8 @@
 	long int index;
 	sscanf( base_name.c_str(), "%ld", &index);
 	SGBucket b(index);
-	cout << "bucket = " << b << endl;
+	cout << "bucket = " << b << ". base path " << b.gen_base_path() <<
+      "/" << b.gen_index() << endl;
 
 	// calculate bucket dimensions
 	point2d c, min, max;
diff -ur C:\FGCVS\terragear-cs\src\BuildTiles\Main\main.cxx C:\FG\27\terragear-cs\src\BuildTiles\Main\main.cxx
--- C:\FGCVS\terragear-cs\src\BuildTiles\Main\main.cxx	Thu Feb 19 12:01:35 2009
+++ C:\FG\27\terragear-cs\src\BuildTiles\Main\main.cxx	Sat Feb 28 12:10:20 2009
@@ -26,7 +26,10 @@
 #endif
 
 #ifdef _MSC_VER
-#  include <io.h>
+#include <sys\types.h>
+#include <sys\stat.h>
+#include <io.h>
+#include <direct.h>     // for getcwd()
 #else
 #  include <sys/types.h>	// for directory reading
 #  include <dirent.h>		// for directory reading
@@ -68,6 +71,9 @@
 using std::endl;
 using std::string;
 using std::vector;
+#if (defined(_MSC_VER) && !defined(NDEBUG))
+using std::cin;
+#endif
 
 vector<string> load_dirs;
 
@@ -183,7 +189,7 @@
             cout << file << "  " << f_index << "  '" << ext << "'" << endl;
             full_path = dir + "/" + file;
             if ( (ext == "arr") || (ext == "arr.gz") || 
-                 (ext == "fit") || (ext == "fit.gz")) {
+                 (ext == "fit") || (ext == "fit.gz") || (ext == "ind")) {
                 // skip
             } else if (ext == "osgb36") {
                 cout << "Loading osgb36 poly definition file\n";
@@ -480,6 +486,7 @@
 // Load elevation data from an Array file, a regular grid of elevation
 // data) and return list of fitted nodes.
 static bool load_array( TGConstruct& c, TGArray& array) {
+   bool ret = false;
     string base = c.get_bucket().gen_base_path();
     int i;
 
@@ -490,17 +497,20 @@
 
 	if ( array.open(array_path) ) {
 	    cout << "Found Array file " << array_path << endl;
+       ret = true;
 	    break;
 	} else {
 	    cout << "Failed to open Array file " << array_path << endl;
 	}
     }
 
+    if (ret) {
     SGBucket b = c.get_bucket();
     array.parse( b );
     array.remove_voids();
+    }
 
-    return true;
+    return ret;
 }
 
 
@@ -1046,7 +1056,11 @@
 
     // load grid of elevation data (Array)
     TGArray array;
-    load_array( c, array );
+    if ( !load_array( c, array ) ) {
+       cout << "Failed tile, bucket = " << c.get_bucket() << endl;
+       return;
+    }
+
 
     // load and clip 2d polygon data
     if ( load_polys( c, array ) == 0 ) {
@@ -1150,6 +1164,24 @@
     exit(-1);
 }
 
+#ifdef _MSC_VER
+#define M_ISDIR _S_IFDIR
+#else
+#define M_ISDIR __S_IFDIR
+#endif
+
+static int is_file_or_directory( string cur_item )
+{
+   struct stat buf;
+   if( stat( cur_item.c_str(), &buf ) == 0 ) {
+      if ( buf.st_mode & M_ISDIR )
+         return 1; // is directory
+      else
+         return 2; // is file
+   }
+   return 0;
+}
+
 
 int main(int argc, char **argv) {
     string output_dir = ".";
@@ -1213,8 +1245,24 @@
     }
     cout << "Nudge is " << nudge << endl;
     for (int i = arg_pos; i < argc; i++) {
-	load_dirs.push_back(argv[i]);
-	cout << "Load directory: " << argv[i] << endl;
+      string dir = argv[i];
+      if (is_file_or_directory( dir ) == 1 ) {
+         load_dirs.push_back(dir);
+         cout << "Load directory: " << dir << endl;
+      } else {
+         dir = work_dir + "/" + dir;
+         if (is_file_or_directory( dir ) == 1 ) {
+            load_dirs.push_back(dir);
+            cout << "Load directory: " << dir << endl;
+         } else {
+            cout << "ERROR: Load directory: " << argv[i] << " NOT FOUND!" << endl;
+         }
+      }
+    }
+    if ( load_dirs.size() == 0 ) {
+       cout << "ERROR: NO VALID LOAD DIRECTORIES!" << endl;
+       cout << "Current directory is [" << getcwd(NULL,0) << "]" << endl;
+       return 1;
     }
 
 #if defined( __CYGWIN__ ) || defined( __CYGWIN32__ ) || defined( _MSC_VER )
@@ -1308,7 +1356,10 @@
 			}
 		    }
 		}
-		// string answer; cin >> answer;
+#if (defined(_MSC_VER) && !defined(NDEBUG))
+      cout << "Done bucket " << b_cur << ". Continue?" << endl;
+		string answer; cin >> answer;
+#endif
 	    }
 	}
     } else {
diff -ur C:\FGCVS\terragear-cs\src\BuildTiles\Main\master.cxx C:\FG\27\terragear-cs\src\BuildTiles\Main\master.cxx
--- C:\FGCVS\terragear-cs\src\BuildTiles\Main\master.cxx	Thu Feb 19 12:01:35 2009
+++ C:\FG\27\terragear-cs\src\BuildTiles\Main\master.cxx	Wed Feb 25 14:45:20 2009
@@ -28,7 +28,9 @@
 
 #include <stdlib.h>    // for system()
 #include <sys/stat.h>  // for stat()
+#ifndef _MSC_VER
 #include <unistd.h>    // for stat()
+#endif
 
 #include <string>
 #include <iostream>
diff -ur C:\FGCVS\terragear-cs\src\Lib\Array\testarray.cxx C:\FG\27\terragear-cs\src\Lib\Array\testarray.cxx
--- C:\FGCVS\terragear-cs\src\Lib\Array\testarray.cxx	Thu Feb 19 12:01:36 2009
+++ C:\FG\27\terragear-cs\src\Lib\Array\testarray.cxx	Wed Feb 25 15:02:20 2009
@@ -1,26 +1,85 @@
+// testarray.cxx
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
 #include <simgear/compiler.h>
 #include <simgear/bucket/newbucket.hxx>
-
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <iostream>
 #include "array.hxx"
 
 using std::cout;
 using std::endl;
 
+static void give_help( char * name )
+{
+	cout << "Usage:   " << name << " longitude latitude work_dir" << endl;
+	cout << "example: " << name << " 151.18 -33.94 your\\work\\dir, for YSSY (Sydney)" << endl;
+}
+static void check_for_help( int argc, char **argv )
+{
+   for(int i = 1; i < argc; i++)
+   {
+      char * parg = argv[i];
+      if(( strcmp(parg,"-h") == 0 )||
+         ( strcmp(parg,"--help") == 0 ))
+      {
+         give_help( argv[0] );
+         exit(0);
+      }
+   }
+}
+
+static int is_file_or_directory( string cur_item )
+{
+   struct stat buf;
+   if( stat( cur_item.c_str(), &buf ) == 0 ) {
+      if ( buf.st_mode & _S_IFDIR )
+         return 1; // is directory
+      else
+         return 2; // is file
+   }
+   return 0;
+}
+
 int main( int argc, char **argv ) {
     double lon, lat;
 
-    if ( argc != 2 ) {
-	cout << "Usage: " << argv[0] << " work_dir" << endl;
+    check_for_help( argc, argv );
+
+    if ( argc != 4 ) {
+       give_help( argv[0] );
 	exit(-1);
     }
 
-    string work_dir = argv[1];
-   
     lon = -146.248360; lat = 61.133950;  // PAVD (Valdez, AK)
     lon = -110.664244; lat = 33.352890;  // P13
+    lon = 150.156; lat = -38.474; // Lithgow, NSW, Australia
+    lat = -33.943392; lon = 151.179773; // YSSY Sydney Intl  tile=e150s30
+
+    lon = atof( argv[1] );
+    lat = atof( argv[2] );
+    string work_dir = argv[3];
+    if ( is_file_or_directory( work_dir ) != 1 ) {
+       cout << "ERROR: '" << work_dir << "' is not a valid directory!" << endl;
+       exit(1);
+    }
+    if( ( lon > 180.0 ) || ( lon < -180.0 ) ) {
+       cout << "ERROR: logitude '" << lon << "' not in world range! -180.0 to 180.0" << endl;
+       exit(1);
+    }
+    if( ( lat > 90.0 ) || ( lat < -90.0 ) ) {
+       cout << "ERROR: latitude '" << lat << "' not in world range! -90.0 to 90.0" << endl;
+       exit(1);
+    }
 
     SGBucket b( lon, lat );
+    cout << "input: lon=" << lon << ", lat=" << lat <<
+       ", Bucket = " << b << endl;
+
     string base = b.gen_base_path();
     string path = work_dir + "/" + base;
 
@@ -32,7 +91,8 @@
 
     lon *= 3600;
     lat *= 3600;
-    cout << "  " << a.altitude_from_grid(lon, lat) << endl;
+    cout << "  " << a.altitude_from_grid(lon, lat) <<
+       " is altitude indication." << endl;
 
     return 0;
 }
diff -ur C:\FGCVS\terragear-cs\src\Lib\Geometry\poly_support.cxx C:\FG\27\terragear-cs\src\Lib\Geometry\poly_support.cxx
--- C:\FGCVS\terragear-cs\src\Lib\Geometry\poly_support.cxx	Thu Feb 19 12:01:36 2009
+++ C:\FG\27\terragear-cs\src\Lib\Geometry\poly_support.cxx	Wed Feb 25 19:16:50 2009
@@ -670,12 +670,15 @@
     TGPolygon tmp = poly;
     for ( int i = 0; i < tmp.contours(); ++i ) {
 	contour = poly.get_contour( i );
-	// cout << "testing contour " << i << "  size = " << contour.size() 
-	//      << "  hole = " << poly.get_hole_flag( i ) << endl;
+#if (defined(_MSC_VER) && !defined(NDEBUG))
+	cout << "testing contour " << i << "  size = " << contour.size() 
+	      << "  hole = " << poly.get_hole_flag( i ) << endl;
+#endif
 	bool have_dups = true;
 	while ( have_dups ) {
 	    have_dups = false;
 	    new_contour.clear();
+       if( contour.size() ) {
 	    Point3D last = contour[ contour.size() - 1 ];
 	    for ( int j = 0; j < (int)contour.size(); ++j ) {
 		// cout << "  " << i << " " << j << endl;
@@ -688,10 +691,15 @@
 		    last = cur;
 		}
 	    }
+       } else {
+		    cout << "skipping iteration of null contour!" << endl;
+       }
 	    contour = new_contour;
 	}
 
-	// cout << "  final size = " << contour.size() << endl;
+#if (defined(_MSC_VER) && !defined(NDEBUG))
+	cout << "  final size = " << contour.size() << endl;
+#endif
 
 	if ( contour.size() ) {
 	    int flag = poly.get_hole_flag( i );
diff -ur C:\FGCVS\terragear-cs\src\Lib\Optimize\genfans.cxx C:\FG\27\terragear-cs\src\Lib\Optimize\genfans.cxx
--- C:\FGCVS\terragear-cs\src\Lib\Optimize\genfans.cxx	Thu Feb 19 12:01:37 2009
+++ C:\FG\27\terragear-cs\src\Lib\Optimize\genfans.cxx	Fri Feb 27 18:37:14 2009
@@ -207,8 +207,9 @@
 	    }
 	    node_list.push_back( t.get_n3() );
 	}
-	// cout << "best list size = " << node_list.size() << endl;
-
+#if (defined(_MSC_VER) && !defined(NDEBUG))
+	cout << "best list size = " << node_list.size() << endl;
+#endif
 	// add this fan to the fan list
 	fans.push_back( node_list );
 
@@ -216,15 +217,23 @@
 	triele_list_iterator t_current = tris.begin();
 	triele_list_iterator t_last = tris.end();
 	counter = 0;
+   index = 0;
 	while ( t_current != t_last ) {
 	    if ( in_fan(counter, best_fan) ) {
-		// cout << "erasing " 
-		//      << t_current->get_n1() << ","
-		//      << t_current->get_n2() << ","
-		//      << t_current->get_n3()
-		//      << " from master tri pool"
-		//      << endl;
+#if (defined(_MSC_VER) && !defined(NDEBUG))
+		 cout << "erasing " 
+		      << t_current->get_n1() << ","
+		      << t_current->get_n2() << ","
+		      << t_current->get_n3()
+		      << " from master tri pool. count=" << tris.size()
+		      << endl;
+#endif
 		tris.erase( t_current );
+#ifdef _MSC_VER
+      t_last = tris.end();
+      t_current = tris.begin() + (counter - index);
+      index++;
+#endif // _MSC_VER
 	    } else {
 		++t_current;
 	    }
diff -ur C:\FGCVS\terragear-cs\src\Lib\poly2tri\construct.c C:\FG\27\terragear-cs\src\Lib\poly2tri\construct.c
--- C:\FGCVS\terragear-cs\src\Lib\poly2tri\construct.c	Thu Feb 19 12:01:38 2009
+++ C:\FG\27\terragear-cs\src\Lib\poly2tri\construct.c	Wed Feb 25 15:10:49 2009
@@ -347,6 +347,7 @@
 
     default:
       fprintf(stderr, "Haggu !!!!!\n");
+      exit(1); // should exit, if really that bad!
       break;
     }
 }
@@ -797,14 +798,13 @@
 	  if (FP_EQUAL(tr[t].lo.y, tr[tlast].lo.y) && 
 	      FP_EQUAL(tr[t].lo.x, tr[tlast].lo.x) && tribot)
 	    {		/* bottom forms a triangle */
-	      int tmpseg;
 
 	      if (is_swapped)	
 		tmptriseg = seg[segnum].prev;
 	      else
 		tmptriseg = seg[segnum].next;
 
-	      if ((tmpseg > 0) && is_left_of(tmpseg, &s.v0))
+	      if ((tmptriseg > 0) && is_left_of(tmptriseg, &s.v0))
 		{
 		  /* L-R downward cusp */
 		  tr[tr[t].d1].u0 = t;
diff -ur C:\FGCVS\terragear-cs\src\Lib\TriangleJRS\showme.c C:\FG\27\terragear-cs\src\Lib\TriangleJRS\showme.c
--- C:\FGCVS\terragear-cs\src\Lib\TriangleJRS\showme.c	Thu Feb 19 12:01:37 2009
+++ C:\FG\27\terragear-cs\src\Lib\TriangleJRS\showme.c	Wed Feb 25 14:45:20 2009
@@ -102,6 +102,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#ifndef _MSC_VER
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/Xatom.h>
@@ -3382,3 +3383,14 @@
     XNextEvent(display, &event);
   }
 }
+
+#else // is _MSC_VER
+// maybe one day do this ...
+int main(int argc, char **argv)
+{
+   printf("Does nothing! No X-Windows\n" );
+   return 1;
+}
+
+#endif // _MSC_VER y/n
+// eof - showme.c
diff -ur C:\FGCVS\terragear-cs\src\Lib\TriangleJRS\triangle.c C:\FG\27\terragear-cs\src\Lib\TriangleJRS\triangle.c
--- C:\FGCVS\terragear-cs\src\Lib\TriangleJRS\triangle.c	Thu Feb 19 12:01:37 2009
+++ C:\FG\27\terragear-cs\src\Lib\TriangleJRS\triangle.c	Wed Feb 25 14:38:33 2009
@@ -211,7 +211,7 @@
 /* If yours is not a Unix system, define the NO_TIMER compiler switch to     */
 /*   remove the Unix-specific timing code.                                   */
 
-/* #define NO_TIMER */
+#define NO_TIMER
 
 /* To insert lots of self-checks for internal errors, define the SELF_CHECK  */
 /*   symbol.  This will slow down the program significantly.  It is best to  */
@@ -225,7 +225,7 @@
 /*   TRILIBRARY symbol.  Read the file triangle.h for details on how to call */
 /*   the procedure triangulate() that results.                               */
 
-/* #define TRILIBRARY */
+#define TRILIBRARY
 
 /* It is possible to generate a smaller version of Triangle using one or     */
 /*   both of the following symbols.  Define the REDUCED symbol to eliminate  */
diff -ur C:\FGCVS\terragear-cs\src\Prep\DemChop\testassem.cxx C:\FG\27\terragear-cs\src\Prep\DemChop\testassem.cxx
--- C:\FGCVS\terragear-cs\src\Prep\DemChop\testassem.cxx	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\DemChop\testassem.cxx	Wed Feb 25 14:45:20 2009
@@ -36,10 +36,6 @@
 #include <Array/array.hxx>
 #include <Polygon/point2d.hxx>
 
-#ifdef _MSC_VER
-#  include <Win32/mkdir.hpp>
-#endif
-
 using std::cout;
 using std::endl;
 using std::string;
diff -ur C:\FGCVS\terragear-cs\src\Prep\DemRaw2ascii\main.c C:\FG\27\terragear-cs\src\Prep\DemRaw2ascii\main.c
--- C:\FGCVS\terragear-cs\src\Prep\DemRaw2ascii\main.c	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\DemRaw2ascii\main.c	Wed Feb 25 16:52:11 2009
@@ -1,6 +1,8 @@
 /* main.cxx -- main loop
  *
  * Written by Curtis Olson, started February 1998.
+ * Modified by Geoff R. McLane, February, 2009
+ * to add min, max, lon, lat, to limit the output of ASCII DEM files.
  *
  * Copyright (C) 1998, 1999  Curtis L. Olson  - http://www.flightgear.org/~curt
  *
@@ -35,30 +37,148 @@
 #ifdef HAVE_STDLIB_H
 #  include <stdlib.h>
 #endif
-
+#include <sys/types.h>
+#include <sys/stat.h>
 #include "rawdem.h"
 
+#ifdef _MSC_VER
+#define M_ISDIR _S_IFDIR
+#else
+#define M_ISDIR __S_IFDIR
+#endif
+
+void give_help( char * name )
+{
+   printf("Usage: %s [OPTIONS] <input_file_basename> <output_dir>\n", name);
+   printf("Options:\n");
+   printf(" --min-lat=<degs> - set minimum latitude for output.\n");
+   printf(" --max-lat=<degs> - set maximum latitude for output.\n");
+   printf(" --min-lon=<degs> - set minimum longitude for output.\n");
+   printf(" --max-lon=<degs> - set maximum longitude for output.\n");
+}
+
+static int is_file_or_directory( char * cur_item )
+{
+   struct stat buf;
+   if( stat( cur_item, &buf ) == 0 ) {
+      if ( buf.st_mode & M_ISDIR )
+         return 1; // is directory
+      else
+         return 2; // is file
+   }
+   return 0;
+}
 
 int main(int argc, char **argv) {
-    fgRAWDEM raw;
-    char basename[256], output_dir[256], hdr_file[256], dem_file[256];
+    static fgRAWDEM raw;
+    static char basename[256], output_dir[256], hdr_file[256], dem_file[256];
     int start_lat, end_lat;
     int i;
-    // double total;
-    // unsigned char buf[2];
-    // short int value;
-
-    if ( argc != 3 ) {
-	printf("Usage: %s <input_file_basename> <output_dir>\n", argv[0]);
-	exit(-1);
+    int last_arg = 1;
+    double min_lat, max_lat, min_lon, max_lon;
+
+#ifdef _MSC_VER // set 2-ditit exponent - defaults to 3
+    _set_output_format( _TWO_DIGIT_EXPONENT );
+#endif // _MSC_VER
+
+    min_lat = max_lat = min_lon = max_lon = BAD_LATLON;
+    for( i = 1; i < argc; i++ )
+    {
+       char * arg = argv[i];
+       if (*arg == '-') {
+          // option
+          if((strcmp(arg,"-h") == 0)||
+             (strcmp(arg,"--help") == 0)) {
+                give_help( argv[0] );
+                exit(0);
+          } else if( strncmp(arg,"--min-lon=", 10) == 0 ) {
+             min_lon = atof( &arg[10] );
+          } else if( strncmp(arg,"--max-lon=", 10) == 0 ) {
+             max_lon = atof( &arg[10] );
+          } else if( strncmp(arg,"--min-lat=", 10) == 0 ) {
+             min_lat = atof( &arg[10] );
+          } else if( strncmp(arg,"--max-lat=", 10) == 0 ) {
+             max_lat = atof( &arg[10] );
+          } else {
+             printf( "ERROR: Unknown argument [%s]. Use -h for help.\n", arg );
+             exit(1);
+          }
+          last_arg = i + 1;
+       } else
+          break;
     }
 
+    if ( (argc - last_arg) != 2 ) {
+       give_help( argv[0] );
+       exit(1);
+    }
+    if(( min_lat != BAD_LATLON )&&
+       (( min_lat < -90.0 )||( min_lat > 90.0 ))) {
+          printf( "ERROR: Bad min-lat [%f]!\n", min_lat );
+          exit(1);
+    }
+    if(( max_lat != BAD_LATLON )&&
+       (( max_lat < -90.0 )||( max_lat > 90.0 ))) {
+          printf( "ERROR: Bad max-lat [%f]!\n", max_lat );
+          exit(1);
+    }
+    if(( min_lon != BAD_LATLON )&&
+       (( min_lon < -180.0 )||( min_lon > 180.0 ))) {
+          printf( "ERROR: Bad min-lon [%f]!\n", min_lon );
+          exit(1);
+    }
+    if(( max_lon != BAD_LATLON )&&
+       (( max_lon < -180.0 )||( max_lon > 180.0 ))) {
+          printf( "ERROR: Bad max-lon [%f]!\n", max_lon );
+          exit(1);
+    }
+    if(( min_lat != BAD_LATLON )&&
+       ( max_lat != BAD_LATLON )&&
+       ( min_lat > max_lat ))
+    {
+       printf( "ERROR: Bad min-lat [%f] NOT less than max-lat [%f]!\n", min_lat, max_lat );
+       exit(1);
+    }
+    if(( min_lon != BAD_LATLON )&&
+       ( max_lon != BAD_LATLON )&&
+       ( min_lon > max_lon ))
+    {
+       printf( "ERROR: Bad min-lon [%f] NOT less than max-lon [%f]!\n", min_lon, max_lon );
+       exit(1);
+    }
+
+    if(( min_lat != BAD_LATLON )||
+       ( max_lat != BAD_LATLON )||
+       ( min_lon != BAD_LATLON )||
+       ( max_lon != BAD_LATLON ))
+    {
+      printf( "Limited to " );
+      if( min_lat != BAD_LATLON )
+         printf( "min lat [%f] ", min_lat );
+      if( max_lat != BAD_LATLON )
+         printf( "max lat [%f] ", max_lat );
+      if( min_lon != BAD_LATLON )
+         printf( "min lon [%f] ", min_lon );
+      if( max_lon != BAD_LATLON )
+         printf( "max lon [%f] ", max_lon );
+      printf( "\n" );
+    }
+
+    /* set any mins and max */
+    raw.min_lat = min_lat;
+    raw.min_lon = min_lon;
+    raw.max_lat = max_lat;
+    raw.max_lon = max_lon;
+
     /* get basename */
-    strcpy(basename, argv[1]);
+    strcpy(basename, argv[last_arg]);
 
     /* get output dir */
-    strcpy(output_dir, argv[2]);
-
+    strcpy(output_dir, argv[last_arg+1]);
+    if ( is_file_or_directory( output_dir ) != 1 ) {
+       printf( "ERROR: Ouput directory [%s], does not exist!\n", output_dir );
+       exit(1);
+    }
     /* generate header file name */
     strcpy(hdr_file, basename);
     strcat(hdr_file, ".HDR");
@@ -106,7 +226,7 @@
     printf("Latitude ranges from %d to %d\n", start_lat, end_lat);
 
     for ( i = start_lat + 1; i <= end_lat; i++ ) {
-	rawProcessStrip(&raw, i, output_dir);
+      rawProcessStrip(&raw, i, output_dir);
     }
 
     /* close the raw data file */
diff -ur C:\FGCVS\terragear-cs\src\Prep\DemRaw2ascii\rawdem.c C:\FG\27\terragear-cs\src\Prep\DemRaw2ascii\rawdem.c
--- C:\FGCVS\terragear-cs\src\Prep\DemRaw2ascii\rawdem.c	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\DemRaw2ascii\rawdem.c	Wed Feb 25 15:19:26 2009
@@ -100,7 +100,12 @@
     /* process each line */
     while ( (reads(fileno(hdr), line, 256) != 0) ) {
 
-	printf("%s", line);
+	len = strlen(line);
+   while(len && ((line[len - 1] == '\n')||(line[len - 1] == '\r'))) {
+      len--;
+      line[len] = 0; // kill EOL characters
+   }
+	printf("%s ", line);
 	len = strlen(line);
 
 	/* extract key */
@@ -128,13 +133,17 @@
 	if ( strcmp(key, "BYTEORDER") == 0 ) {
 	    if ( strcmp( value, "M" ) == 0 ) {
 		raw->big_endian = 1;
+      printf( "- set big_endian\n" );
 	    } else {
+      printf( "- unset big_endian (not 'M'!)\n" );
 		raw->big_endian = 0;
 	    }
 	} else if ( strcmp(key, "NROWS") == 0 ) {
 	    raw->nrows = atoi(value);
+       printf( "- set rows to %d\n", raw->nrows );
 	} else if ( strcmp(key, "NCOLS") == 0 ) {
 	    raw->ncols = atoi(value);
+       printf( "- set cols to %d\n", raw->ncols );
 	} else if ( strcmp(key, "ULXMAP") == 0 ) {
 	    tmp = atof(value);
 #ifdef HAVE_RINT
@@ -142,6 +151,8 @@
 #else
 	    raw->ulxmap = (int)round(tmp * 3600.0); /* convert to arcsec */
 #endif
+       printf( "- set ulxmap to %d arcsecs (%d degrees)\n", raw->ulxmap,
+          raw->ulxmap / 3600);
 	} else if ( strcmp(key, "ULYMAP") == 0 ) {
 	    tmp = atof(value);
 #ifdef HAVE_RINT
@@ -149,6 +160,8 @@
 #else
 	    raw->ulymap = (int)round(tmp * 3600.0); /* convert to arcsec */
 #endif
+       printf( "- set ulymap to %d arcsecs (%d degrees)\n", raw->ulymap,
+          raw->ulymap / 3600);
 	} else if ( strcmp(key, "XDIM") == 0 ) {
 	    tmp = atof(value);
 #ifdef HAVE_RINT
@@ -156,6 +169,8 @@
 #else
 	    raw->xdim = (int)round(tmp * 3600.0);   /* convert to arcsec */
 #endif
+       printf( "- set xdim to %d arcsecs (%f degrees)\n", raw->xdim,
+          (double)raw->xdim / 3600.0);
 	} else if ( strcmp(key, "YDIM") == 0 ) {
 	    tmp = atof(value);
 #ifdef HAVE_RINT
@@ -163,8 +178,10 @@
 #else
 	    raw->ydim = (int)round(tmp * 3600.0);   /* convert to arcsec */
 #endif
+       printf( "- set ydim to %d arcsecs (%f degrees)\n", raw->ydim,
+          (double)raw->ydim / 3600.0);
 	} else {
-	    /* ignore for now */
+	    printf( "- ignore for now\n" );
 	}
     }
 
@@ -331,6 +348,16 @@
 
     sprintf(outfile, "%s/%c%03d%c%02d.dem", path, lon_sign, lon, lat_sign, lat);
 
+   if((( raw->min_lat != BAD_LATLON )&&((double)ilat < raw->min_lat ))||
+      (( raw->max_lat != BAD_LATLON)&&( (double)ilat > raw->max_lat ))||
+      (( raw->min_lon != BAD_LATLON)&&( (double)ilon < raw->min_lon ))||
+      (( raw->max_lon != BAD_LATLON)&&( (double)ilon > raw->max_lon )))
+   {
+       printf("outfile = %s not written. Outside range\n", outfile);
+       return;
+   }
+
+
     printf("outfile = %s\n", outfile);
 
     if ( (fd = fopen(outfile, "w")) == NULL ) {
@@ -468,7 +495,7 @@
     /* convert to arcsec */
     lat = lat_degrees * 3600;
 
-    printf("Max Latitude = %d arcsec\n", lat);
+    printf("Max Latitude = %d arcsec (%f degs)\n", lat, lat_degrees);
 
     /* validity check ... */
     if ( (lat > raw->rooty) || 
diff -ur C:\FGCVS\terragear-cs\src\Prep\DemRaw2ascii\rawdem.h C:\FG\27\terragear-cs\src\Prep\DemRaw2ascii\rawdem.h
--- C:\FGCVS\terragear-cs\src\Prep\DemRaw2ascii\rawdem.h	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\DemRaw2ascii\rawdem.h	Wed Feb 25 15:20:29 2009
@@ -29,6 +29,7 @@
 #define MAX_ROWS 6000
 #define MAX_COLS 7200
 #define MAX_COLS_X_2 14400
+#define BAD_LATLON  12345.0
 
 typedef struct {
     /* header info */
@@ -44,6 +45,8 @@
     int tmp_min;     /* current 1x1 degree tile minimum */
     int tmp_max;     /* current 1x1 degree tile maximum */
     
+    double min_lat, max_lat, min_lon, max_lon; /* some limits, if any */
+
     /* file ptr */
     int fd;          /* Raw DEM file descriptor */
 
diff -ur C:\FGCVS\terragear-cs\src\Prep\MergerClipper\merger.cxx C:\FG\27\terragear-cs\src\Prep\MergerClipper\merger.cxx
--- C:\FGCVS\terragear-cs\src\Prep\MergerClipper\merger.cxx	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\MergerClipper\merger.cxx	Wed Feb 25 14:34:16 2009
@@ -40,6 +40,7 @@
 #include "merger.hxx"
 
 using std::cout;
+using std::endl;
 
 // Constructor
 FGMerger::FGMerger( void ) {
diff -ur C:\FGCVS\terragear-cs\src\Prep\MergerClipper\merger.hxx C:\FG\27\terragear-cs\src\Prep\MergerClipper\merger.hxx
--- C:\FGCVS\terragear-cs\src\Prep\MergerClipper\merger.hxx	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\MergerClipper\merger.hxx	Wed Feb 25 14:34:16 2009
@@ -36,6 +36,7 @@
 
 #include <Polygon/polygon.hxx>
 #include <Polygon/names.hxx>
+#include <Clipper/priorities.hxx>
 
 #include <string>
 
diff -ur C:\FGCVS\terragear-cs\src\Prep\MergerClipper\testmerger.cxx C:\FG\27\terragear-cs\src\Prep\MergerClipper\testmerger.cxx
--- C:\FGCVS\terragear-cs\src\Prep\MergerClipper\testmerger.cxx	Thu Feb 19 12:01:40 2009
+++ C:\FG\27\terragear-cs\src\Prep\MergerClipper\testmerger.cxx	Wed Feb 25 14:48:15 2009
@@ -27,7 +27,12 @@
 #endif
 #include <simgear/debug/logstream.hxx>
 #include <simgear/bucket/newbucket.hxx>
+#ifdef _MSC_VER
+#include <sys/types.h>
+#include <sys/stat.h>
+#else
 #include <dirent.h>
+#endif
 
 #include <Polygon/point2d.hxx>
 
@@ -57,12 +62,21 @@
   string base_name;
   // process all specified polygon files
   string cur_dir=argv[0];
+#ifdef _MSC_VER
+   struct stat buf;
+   if(( stat( cur_dir.c_str(), &buf ) )||
+      !( buf.st_mode & _S_IFDIR )) {
+      cout << "cannot open directory " << cur_dir << "\n";
+      return 0;
+   }
+#else
   DIR *d;
   // struct dirent *de;
   if ( (d = opendir( cur_dir.c_str() )) == NULL ) {
         cout << "cannot open directory " << cur_dir << "\n";
         return 0;
   }
+#endif
 
   //  string file;
   //vector<char> files;
@@ -97,7 +111,7 @@
     
     c.x = b.get_center_lon();
     c.y = b.get_center_lat();
-    double span = c.get_width();
+    double span = b.get_width();
     
     if ( (c.y >= -89.0) && (c.y < 89.0) ) {
       min.x = c.x - span / 2.0;
diff -ur C:\FGCVS\terragear-cs\src\Prep\Terra\terra.cc C:\FG\27\terragear-cs\src\Prep\Terra\terra.cc
--- C:\FGCVS\terragear-cs\src\Prep\Terra\terra.cc	Thu Feb 19 12:01:42 2009
+++ C:\FG\27\terragear-cs\src\Prep\Terra\terra.cc	Wed Feb 25 14:45:20 2009
@@ -1,5 +1,6 @@
 #include "terra.h"
 
+int
 main(int argc, char **argv)
 {
     Terra::process_cmdline(argc, argv);