Index: /issm/trunk-jpl/examples/ISMIP/runme.m
===================================================================
--- /issm/trunk-jpl/examples/ISMIP/runme.m	(revision 26027)
+++ /issm/trunk-jpl/examples/ISMIP/runme.m	(revision 26028)
@@ -124,20 +124,23 @@
 
 	% periodic boundaries have to be fixed on the sides
-	% create tabs with the side of the domain
+	% Find the indices of the sides of the domain, separately for x and y
 	% for x
-	% create maxX #help find
-	%->
-
-	% create minX
-	%->
-
-	% for y, max X and minX should be excluded
-	% create maxY
-	%->
-
-	% create minY
-	%->
-
-	% set the node that should be paired together
+	% create maxX, list of indices where x is equal to max of x (use >> help find)
+	%->
+
+	% create minX, list of indices where x is equal to min of x
+	%->
+
+	% for y
+	% create maxY, list of indices where y is equal to max of y
+	%  but not where x is equal to max or min of x
+	% (i.e, indices in maxX and minX should be excluded from maxY and minY)
+	%->
+
+	% create minY, list of indices where y is equal to max of y
+	%  but not where x is equal to max or min of x
+	%->
+
+	% set the node that should be paired together, minX with maxX and minY with maxY
 	% #md.stressbalance.vertex_pairing
 	%->