diff --git a/subx/apps/survey.subx b/subx/apps/survey.subx
index f4183117..45b84b36 100644
--- a/subx/apps/survey.subx
+++ b/subx/apps/survey.subx
@@ -6,7 +6,7 @@
 #
 # To build (from the subx/ directory):
 #   $ ./subx translate *.subx apps/survey.subx -o apps/survey
-# 
+#
 # The expected input is a stream of bytes with segment headers, comments and
 # some interspersed labels.
 #   $ cat x
@@ -1124,4 +1124,13 @@ $p_align:
   # compute the starting address for each segment
   0x1000/imm32
 
+_test-label-slice-start:
+  41/A
+  41/A
+  41/A
+_test-label-slice-end2:
+  3A/:
+_test-label-slice-end1:
+
+
 # . . vim:nowrap:textwidth=0