diff --git a/IV/tests.sql b/IV/tests.sql
index ba8db29..fac49bb 100644
--- a/IV/tests.sql
+++ b/IV/tests.sql
@@ -11,9 +11,9 @@ begin
 end $$ LANGUAGE plpgsql;
 
 -- to preview this somewhat conveniently in QGIS:
--- stage || '_' || name || ' iter:' || iter || ' nbend:'|| nbend
+-- stage || '_' || name || ' gen:' || coalesce(gen, 'Ø')|| ' nbend:'|| lpad(nbend, 2, '0')
 drop table if exists debug_wm;
-create table debug_wm(stage text, name text, iter bigint, nbend bigint, way geometry, props json);
+create table debug_wm(stage text, name text, gen bigint, nbend bigint, way geometry, props json);
 
 drop table if exists figures;
 create table figures (name text, way geometry);
@@ -64,7 +64,7 @@ $$ language plpgsql;
 -- COMBINED
 drop table if exists demo_wm;
 create table demo_wm (name text, i bigint, way geometry);
-insert into demo_wm (name, way) select name, ST_SimplifyWM(way, name) from figures;
+insert into demo_wm (name, way) select name, ST_SimplifyWM(way, name) from figures where name='fig6-combi';
 
 do $$
 declare
@@ -125,7 +125,7 @@ begin
     ) from (select unnest(vcrossings) way) a)
   );
 
-  elems1 = array((select way from debug_wm where stage='cinflections' and name='fig6-combi' and iter=1));
+  elems1 = array((select way from debug_wm where stage='cinflections' and name='fig6-combi' and gen=1));
   elems2 = (select ways from inflections where name='fig6-combi');
 
   foreach elem in array elems1 loop
diff --git a/IV/wm.sql b/IV/wm.sql
index 8948ed0..7c16cb4 100644
--- a/IV/wm.sql
+++ b/IV/wm.sql
@@ -299,10 +299,9 @@ begin
       select (res.area*(0.75/res.cmp)) into res.adjsize;
     end if;
     if dbgname is not null then
-      insert into debug_wm (stage, name, iter, nbend, way, props) values(
+      insert into debug_wm (stage, name, nbend, way, props) values(
         'ebendattrs',
         dbgname,
-        1,
         i,
         bend,
         json_build_object(
@@ -346,10 +345,10 @@ begin
     dbg_stage = 1;
     while mutated loop
       if dbgname is not null then
-        insert into debug_wm (stage, name, iter, nbend, way) values(
+        insert into debug_wm (stage, name, gen, nbend, way) values(
           'afigures',
           dbgname,
-          1,
+          dbg_stage,
           i,
           lines[i]
         );
@@ -358,22 +357,23 @@ begin
       bends = detect_bends(lines[i]);
 
       if dbgname is not null then
-        insert into debug_wm(stage, name, iter, nbend, way) values(
+        insert into debug_wm(stage, name, gen, nbend, way) values(
           'bbends',
           dbgname,
-          i,
+          dbg_stage,
           generate_subscripts(bends, 1),
           unnest(bends)
         );
       end if;
 
+      raise notice 'before inflections: %', dbg_geomsummary(bends);
       bends = fix_gentle_inflections(bends);
 
       if dbgname is not null then
-        insert into debug_wm(stage, name, iter, nbend, way) values(
+        insert into debug_wm(stage, name, gen, nbend, way) values(
           'cinflections',
           dbgname,
-          i,
+          dbg_stage,
           generate_subscripts(bends, 1),
           unnest(bends)
         );
@@ -382,10 +382,10 @@ begin
       select * from self_crossing(bends) into bends, mutated;
 
       if dbgname is not null then
-        insert into debug_wm(stage, name, iter, nbend, way) values(
+        insert into debug_wm(stage, name, gen, nbend, way) values(
           'dcrossings',
           dbgname,
-          i,
+          dbg_stage,
           generate_subscripts(bends, 1),
           unnest(bends)
         );
@@ -410,3 +410,14 @@ begin
   end if;
 end
 $$ language plpgsql;
+
+drop function if exists dbg_geomsummary;
+create function dbg_geomsummary(geoms geometry[], OUT output text) as $$
+  declare i int4;
+begin
+  output = format('len: %s;', array_length(geoms, 1));
+  for i in 1..array_length(geoms, 1) loop
+    output = output || format(' %s:%s;', i, st_astext(geoms[i]));
+  end loop;
+end
+$$ language plpgsql;