Add timestamp to document meta data

nw/core/document.py

@@ -27,8 +27,10 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 import logging
 import os
 
+from time import time
+
 from nw.constants import nwAlert
-from nw.common import isHandle
+from nw.common import isHandle, formatTimeStamp
 from nw.constants import nwItemLayout, nwItemClass
 
 logger = logging.getLogger(__name__)
@@ -151,6 +153,7 @@ class NWDoc():
                 f"%%~name: {self._theItem.itemName}\n"
                 f"%%~path: {self._theItem.itemParent}/{self._theItem.itemHandle}\n"
                 f"%%~kind: {self._theItem.itemClass.name}/{self._theItem.itemLayout.name}\n"
+                f"%%~time: {formatTimeStamp(time())}\n"
             )
 
         try: