diff --git a/server/touchterrain_config.py b/server/touchterrain_config.py
index 741ff60..bcc97f3 100644
--- a/server/touchterrain_config.py
+++ b/server/touchterrain_config.py
@@ -11,6 +11,9 @@
 NUM_CORES = 0 # 0 means: use all cores
 if SERVER_TYPE == "paste": NUM_CORES = 1 # 1 means don't use multi-core at all
 
+
+# limits for ISU server (Mar. 2019)
+
 # for STL/OBJ don't even start with a DEM bigger than that number. GeoTiff export is this * 50!
 MAX_CELLS_PERMITED =   1000 * 1000 * 0.4   
 
@@ -23,5 +26,3 @@
 
 # Overrides
 #MAX_CELLS = 0  # CH: test to force using tempfiles
-~                                                                                                                  
-~                                                       
\ No newline at end of file