diff --git a/nw/constants/__init__.py b/nw/constants/__init__.py
index 1ffe2540..b58b56c3 100644
--- a/nw/constants/__init__.py
+++ b/nw/constants/__init__.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 from nw.constants.iso import isoLanguage, isoCountry
 from nw.constants.constants import (
-    nwConst, nwRegEx, nwFiles, nwKeyWords, nwLabels, nwQuotes, nwUnicode
+    nwConst, nwLists, nwRegEx, nwFiles, nwKeyWords, nwLabels, nwQuotes, nwUnicode
 )
 from nw.constants.enum import (
     nwAlert, nwDocAction, nwItemClass, nwItemLayout, nwItemType, nwOutline,
@@ -11,18 +11,19 @@ from nw.constants.enum import (
 __all__ = [
     "isoCountry",
     "isoLanguage",
-    "nwAlert",
     "nwConst",
-    "nwDocAction",
-    "nwDocInsert",
+    "nwLists",
+    "nwRegEx",
     "nwFiles",
+    "nwKeyWords",
+    "nwLabels",
+    "nwQuotes",
+    "nwUnicode",
+    "nwAlert",
+    "nwDocAction",
     "nwItemClass",
     "nwItemLayout",
     "nwItemType",
-    "nwKeyWords",
-    "nwLabels",
     "nwOutline",
-    "nwQuotes",
-    "nwRegEx",
-    "nwUnicode",
+    "nwDocInsert",
 ]
diff --git a/nw/constants/constants.py b/nw/constants/constants.py
index b0ea61c5..a39bb8e1 100644
--- a/nw/constants/constants.py
+++ b/nw/constants/constants.py
@@ -45,10 +45,19 @@ class nwConst():
     SP_INTERNAL = "internal"
     SP_ENCHANT  = "enchant"
 
-    # Check Lists
+# END Class nwConst
+
+class nwLists():
+    """Lists used for grouping various other constants.
+    """
+
+    # Regular user-accessible item types
     REG_TYPES = {nwItemType.ROOT, nwItemType.FOLDER, nwItemType.FILE}
 
-# END Class nwConst
+    # Item classes where the full list of novel layouts are allowed
+    CLS_NOVEL = {nwItemClass.NOVEL, nwItemClass.ARCHIVE}
+
+# END Class nwLists
 
 class nwRegEx():
 
diff --git a/nw/guimain.py b/nw/guimain.py
index 920a689e..c7ad7e55 100644
--- a/nw/guimain.py
+++ b/nw/guimain.py
@@ -47,7 +47,7 @@ from nw.gui import (
     GuiTheme, GuiWritingStats
 )
 from nw.core import NWProject, NWDoc, NWIndex
-from nw.constants import nwItemType, nwItemClass, nwAlert, nwConst
+from nw.constants import nwItemType, nwItemClass, nwAlert, nwLists
 from nw.common import getGuiItem
 
 logger = logging.getLogger(__name__)
@@ -725,7 +725,7 @@ class GuiMain(QMainWindow):
         tItem = self.theProject.projTree[tHandle]
         if tItem is None:
             return
-        if tItem.itemType not in nwConst.REG_TYPES:
+        if tItem.itemType not in nwLists.REG_TYPES:
             return
 
         logger.verbose("Requesting change to item %s" % tHandle)