diff --git a/subx/apps/survey.subx b/subx/apps/survey.subx
index 0bb394c5..5c654b00 100644
--- a/subx/apps/survey.subx
+++ b/subx/apps/survey.subx
@@ -1066,13 +1066,14 @@ $compute-addresses:end:
     c3/return
 
 test-compute-addresses:
-    # segments:
-    #   - 'a': {0x1000, 0, 5}
-    #   - 'b': {0x2018, 5, 1}
-    #   - 'c': {0x5444, 6, 12}
-    # labels:
-    #   - 'l1': {'a', 3, 0}
-    #   - 'l2': {'b', 0, 0}
+    # input:
+    #   segments:
+    #     - 'a': {0x1000, 0, 5}
+    #     - 'b': {0x2018, 5, 1}
+    #     - 'c': {0x5444, 6, 12}
+    #   labels:
+    #     - 'l1': {'a', 3, 0}
+    #     - 'l2': {'b', 0, 0}
     #
     # trace contains in any order (comments in parens):
     #   segment 'a' starts at address 0x00001094.  (0x34 + 0x20 for each segment)