diff --git a/rogueviz/ru/classes.cpp b/rogueviz/ru/classes.cpp
index ff5e22ae..aacafa4f 100644
--- a/rogueviz/ru/classes.cpp
+++ b/rogueviz/ru/classes.cpp
@@ -532,6 +532,14 @@ struct horoplatform : public moving_platform {
     }
   };
 
+struct length_platform : public moving_platform {
+  unique_ptr<moving_platform> base; int len;
+  virtual int width() { return len; }
+  xy location_at(ld t) { return base->location_at(t); }
+  string get_name() override { return "short " + base->get_name(); }
+  string get_help() override { return base->get_help(); }
+  };
+
 struct cycloid_platform : public moving_platform {
   moving_platform *base;
   ld period, shift;
diff --git a/rogueviz/ru/load-world.cpp b/rogueviz/ru/load-world.cpp
index 653152b3..b6d0f4ee 100644
--- a/rogueviz/ru/load-world.cpp
+++ b/rogueviz/ru/load-world.cpp
@@ -370,6 +370,17 @@ void load_room(fhstream& f, cell *c) {
         p = &*b;
         r.entities.emplace_back(std::move(b));
         }
+      else if(cap == "LENGTH") {
+        int len = get_int();
+        for(auto& p: last_platform) {
+          auto& f = find_entity(r, p);
+          auto b = std::make_unique<length_platform>();
+          b->len = len;
+          p = &*b;
+          b->base = std::move(as_platform(f));
+          f = std::move(b);
+          }
+        }
       else if(cap == "SAW") for(auto p: last_platform) {
         auto& f = find_entity(r, p);
         auto b = std::make_unique<saw>(); nam(*b);