diff --git a/ueforth/Makefile b/ueforth/Makefile
index 5088534..8e10567 100644
--- a/ueforth/Makefile
+++ b/ueforth/Makefile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-VERSION=7.0.6.12
+VERSION=7.0.6.13
 STABLE_VERSION=7.0.5.4
 REVISION=$(shell git rev-parse HEAD | head -c 20)
 REVSHORT=$(shell echo $(REVISION) | head -c 7)
@@ -26,7 +26,7 @@ WINDOWS = $(OUT)/windows
 ESP32 = $(OUT)/esp32
 DEPLOY = $(OUT)/deploy
 
-CFLAGS_COMMON = -std=c++11 -O2 -I ./ -I $(OUT)
+CFLAGS_COMMON = -O2 -I ./ -I $(OUT)
 
 CFLAGS_MINIMIZE = \
                 -s \
@@ -43,6 +43,7 @@ CFLAGS_MINIMIZE = \
                 -fmerge-all-constants
 CFLAGS = $(CFLAGS_COMMON) \
          $(CFLAGS_MINIMIZE) \
+         -std=c++11 \
          -Wall \
          -Werror \
          -no-pie \
@@ -170,7 +171,7 @@ WINDOWS_BOOT = common/boot.fs common/conditionals.fs common/vocabulary.fs \
                common/blocks.fs common/locals.fs \
                common/fini.fs
 $(GEN)/windows_boot.h: common/source_to_string.js $(WINDOWS_BOOT) | $(GEN)
-	$< boot $(VERSION) $(REVISION) $(WINDOWS_BOOT) >$@
+	$< -win boot $(VERSION) $(REVISION) $(WINDOWS_BOOT) >$@
 
 ESP32_BOOT = common/boot.fs common/conditionals.fs common/vocabulary.fs \
              common/tasks.fs esp32/platform.fs esp32/highlevel.fs \
diff --git a/ueforth/common/source_to_string.js b/ueforth/common/source_to_string.js
index 990c51e..9ad5d82 100755
--- a/ueforth/common/source_to_string.js
+++ b/ueforth/common/source_to_string.js
@@ -30,17 +30,33 @@ function DropCopyright(source) {
   return cleaned.join('\n');
 }
 
-var name = process.argv[2];
-var version = process.argv[3];
-var revision = process.argv[4];
+var is_windows = false;
+
+var args = process.argv.slice(2);
+if (args.length > 0 && args[0] == '-win') {
+  is_windows = true;
+  args.shift();
+}
+var name = args.shift();
+var version = args.shift();
+var revision = args.shift();
 var source = '';
-for (var i = 5; i < process.argv.length; i++) {
-  source += DropCopyright(fs.readFileSync(process.argv[i]).toString());
+while (args.length > 0) {
+  source += DropCopyright(fs.readFileSync(args.shift()).toString());
 }
 
 source = source.replace('{{VERSION}}', version);
 source = source.replace('{{REVISION}}', revision);
 
-source = 'const char ' + name + '[] = R"""(\n' + source + ')""";\n';
+if (is_windows) {
+  source = source.replace(/\\/g, '\\\\');
+  source = source.replace(/["]/g, '\\"');
+  source = '"' + source.split('\n').join('\\n"\n"') + '\\n"';
+  source = source.replace(/["]  ["]/g, '');
+  source = source.replace(/["] [(] ([^)]*)[)] ["]/g, '// $1');
+  source = 'const char ' + name + '[] =\n' + source + ';\n';
+} else {
+  source = 'const char ' + name + '[] = R"""(\n' + source + ')""";\n';
+}
 
 process.stdout.write(source);
diff --git a/ueforth/esp32/template.ino b/ueforth/esp32/template.ino
index bfbb185..0c191b7 100644
--- a/ueforth/esp32/template.ino
+++ b/ueforth/esp32/template.ino
@@ -95,6 +95,8 @@
 # define USER_WORDS
 #endif
 
+static cell_t ResizeFile(cell_t fd, cell_t size);
+
 #define PLATFORM_OPCODE_LIST \
   FLOATING_POINT_LIST \
   REQUIRED_MEMORY_SUPPORT \
@@ -297,6 +299,9 @@
 # include "esp_intr_alloc.h"
 # include "driver/timer.h"
 # include "driver/gpio.h"
+static cell_t EspIntrAlloc(cell_t source, cell_t flags, cell_t xt, cell_t arg, void *ret);
+static cell_t GpioIsrHandlerAdd(cell_t pin, cell_t xt, cell_t arg);
+static cell_t TimerIsrRegister(cell_t group, cell_t timer, cell_t xt, cell_t arg, cell_t flags, void *ret);
 # define OPTIONAL_INTERRUPTS_SUPPORT \
   Y(gpio_config, n0 = gpio_config((const gpio_config_t *) a0)) \
   Y(gpio_reset_pin, n0 = gpio_reset_pin((gpio_num_t) n0)) \
@@ -546,6 +551,7 @@ static cell_t FromIP(IPAddress ip) {
 # define OPTIONAL_WEBSERVER_SUPPORT
 #else
 # include <WebServer.h>
+static void InvokeWebServerOn(WebServer *ws, const char *url, cell_t xt);
 # define ws0 ((WebServer *) a0)
 # define OPTIONAL_WEBSERVER_SUPPORT \
   /* WebServer */ \
@@ -614,12 +620,6 @@ static char filename[PATH_MAX];
 static String string_value;
 #endif
 
-#ifdef ENABLE_INTERRUPTS_SUPPORT
-static cell_t EspIntrAlloc(cell_t source, cell_t flags, cell_t xt, cell_t arg, cell_t *ret);
-static cell_t GpioIsrHandlerAdd(cell_t pin, cell_t xt, cell_t arg);
-static cell_t TimerIsrRegister(cell_t group, cell_t timer, cell_t xt, cell_t arg, void *ret);
-#endif
-
 {{core}}
 {{interp}}
 {{boot}}