diff --git a/localsettingsserver.py b/localsettingsserver.py
index 1cde267..7e7a67f 100644
--- a/localsettingsserver.py
+++ b/localsettingsserver.py
@@ -10,6 +10,7 @@ DATABASE_PORT = ''             # Set to empty string for default. Not used with
 
 SURVEX_DATA = '/home/expo/loser/'
 CAVERN = 'cavern'
+THREEDTOPOS = '3dtopos'
 EXPOWEB = '/home/expo/expoweb/'
 SURVEYS = '/home/expo/'
 SURVEY_SCANS = '/home/expo/expoimages/'
diff --git a/localsettingsubuntu.py b/localsettingsubuntu.py
index 0d1fe62..63e3ce6 100644
--- a/localsettingsubuntu.py
+++ b/localsettingsubuntu.py
@@ -16,6 +16,7 @@ EXPOWEB_URL = 'http://expo.survex.com/'
 PUBLIC_SITE = False
 
 CAVERN = 'cavern'
+THREEDTOPOS = '3dtopos'
 EXPOWEB = '/home/goatchurch/expoweb/'
 SURVEYS_URL = ''
 
diff --git a/localsettingswindows.py b/localsettingswindows.py
index 168a39a..c5cb682 100644
--- a/localsettingswindows.py
+++ b/localsettingswindows.py
@@ -7,6 +7,7 @@ DATABASE_PORT = ''             # Set to empty string for default. Not used with
 
 SURVEX_DATA = 'c:\\Expo\\loser\\'
 CAVERN = 'cavern'
+THREEDTOPOS = '3dtopos'
 EXPOWEB = 'C:\\Expo\\expoweb\\'
 SURVEYS = 'E:\\surveys\\'
 SURVEY_SCANS = 'E:\\surveys\\surveyscans'