diff --git a/src/reskit/level/converter.rs b/src/reskit/level/converter.rs
index f930661..0b96a4e 100644
--- a/src/reskit/level/converter.rs
+++ b/src/reskit/level/converter.rs
@@ -172,7 +172,6 @@ pub fn get_tiled_tilemap( path: &str ) -> Result<TiledTilemap, Box<dyn Error>> {
             result
         }
     };
-    println!( "working directory is {}/", working_directory );
 
     let map = document.descendants().find( | node | node.tag_name() == "map".into() );
     if let Some( map ) = map {
diff --git a/src/reskit/level/system.rs b/src/reskit/level/system.rs
index dc69e5e..28acfa5 100644
--- a/src/reskit/level/system.rs
+++ b/src/reskit/level/system.rs
@@ -385,6 +385,40 @@ pub fn get_ecs( tilemap: &TiledTilemap ) -> Result<Vec<u8>, Box<dyn Error>> {
         print_info( &format!( "Component ID {}: {}", i, component_ids[ i ] ) );
     }
 
+    // Output type structures to terminal
+    let mut visited_types: LinkedHashSet<LinkedHashSet<String>> = LinkedHashSet::new();
+    for entity in &tilemap.ecs {
+        // Do the thing again
+        let mut components: Vec<String> = entity.components.keys().map( | id | id.to_lowercase() ).collect();
+        components.sort();
+        let components: LinkedHashSet<String> = components.into_iter().collect();
+
+        if visited_types.insert( components.clone() ) {
+            // What type id is this?
+            let type_id: u8 = types.iter().position( | ecs_type | ecs_type == &components ).ok_or( "internal error: no type id" )? as u8;
+            print_info( &format!( "Type ID {} Components and Attributes:", type_id ) );
+
+            let mut components: Vec<(&String, &Component)> = entity.components.iter().collect();
+            components.sort_by( | a, b | a.0.partial_cmp( b.0 ).expect( "internal error: unsortable" ) );
+
+            for ( component_name, component ) in components {
+                print_info( &format!( "\tComponent {}", component_name ) );
+                let mut attributes: Vec<(&String, &String)> = component.attributes.iter().collect();
+                attributes.sort_by( | a, b | a.0.partial_cmp( b.0 ).expect( "internal error: unsortable" ) );
+
+                let mut index = 0;
+                for ( attribute_name, _ ) in &attributes {
+                    print_info( &format!( "\t\tAttribute ID {}: {}", index, attribute_name ) );
+                    index += 1;
+                }
+
+                if attributes.is_empty() {
+                    print_info( "\t\tNo attributes" );
+                }
+            }
+        }
+    }
+
     Ok( result )
 }