diff --git a/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt b/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt
index c7df2f0e6..79cb80d2c 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt
@@ -18,12 +18,8 @@ import net.torvald.terrarum.worlddrawer.WorldCamera
 open class DroppedItem : ActorWithBody {
 
     private var itemID: ItemID = ""
-        set(value) {
-            field = value
-            textureRegion = ItemCodex.getItemImage(itemID)!!
-        }
 
-    @Transient private lateinit var textureRegion: TextureRegion
+    @Transient private var textureRegion: TextureRegion? = null // deserialiser won't call setter of the fields
 
     var itemCount = 1
 
@@ -54,8 +50,12 @@ open class DroppedItem : ActorWithBody {
     }
 
     override fun drawBody(batch: SpriteBatch) {
-        // copy-pasted from ActorWithBody.drawSpriteInGoodPosition()
+        // deserialiser won't call setter of the fields
+        if (textureRegion == null) {
+            textureRegion = ItemCodex.getItemImage(itemID)!!
+        }
 
+        // copy-pasted from ActorWithBody.drawSpriteInGoodPosition()
         if (world == null) return
 
 
diff --git a/work_files/DataFormats/NewLangFile.md b/work_files/DataFormats/NewLangFile.md
new file mode 100644
index 000000000..890f4b485
--- /dev/null
+++ b/work_files/DataFormats/NewLangFile.md
@@ -0,0 +1,33 @@
+#### Formal Grammar
+
+````
+Text = Tag , Text | PlainText , Text ;
+
+Tag = "{" , Code , { TagArgs } , "}" ;
+TagArgs = " " , Text ;
+Code = Number | "G" | "P" | "KC" | "NORMAL" | "EMPH" | "VERB" | "RED" | Code , "." , Subcode ;
+    (* KC: keycap. e.g. "{KC config_keyinteract}" | "{KC e}" *)
+    (* G:  *)
+    (* EMPH: emphasize noun. e.g. "Treasure for the {EMPH}paraglider{NORMAL}. A fair exchange, I believe." *)
+    (* Number: n-th substitution target. e.g. "Treasure for the {EMPH}{0}{NORMAL}. A fair exchange, I believe." *)
+    (* NORMAL: unset emphases. *)
+    (* VERB: emphasize verb. e.g. "Press {KC use} to pay {VERB} respects" *)
+    (* RED: red text. e.g. "Saving, {RED}do not turn off the power{NORMAL}..." *)
+
+Subcode = Case | Count ;
+Case = "NOM" | "ACC" | "GEN" | "DAT" | ... ;
+Count = "SG" | "DU" | "PL" ;
+
+Number = { "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" } ;
+
+PlainText = ? regular string but does not contain { C u R l Y } brackets ? ;
+````
+
+#### Code Example
+
+```
+function ShowMsg(string: String, vararg args: String) { ... } // pre-defined
+
+val m = "Give {0} {P 1 0} to {2.ACC}"
+ShowMsg(m, 42, "GAME_ITEM_COAL", conversationTarget.actorValue.name)
+```