diff --git a/server/GameServer/Commands.lean b/server/GameServer/Commands.lean
index ab1618c..92be107 100644
--- a/server/GameServer/Commands.lean
+++ b/server/GameServer/Commands.lean
@@ -275,7 +275,8 @@ Only the existing statement will be available in later levels:
       let thmStatement ← `(theorem $(mkIdent defaultDeclName) $sig $val)
       elabCommand thmStatement
     else
-      let thmStatement ← `(theorem $(mkIdent name.getId) $sig $val)
+      -- logInfo attr
+      let thmStatement ← `( theorem $(mkIdent name.getId) $sig $val)
       elabCommand thmStatement
   | none =>
     let thmStatement ← `(theorem $(mkIdent defaultDeclName) $sig $val)
@@ -420,6 +421,39 @@ elab "Branch" t:tacticSeq : tactic => do
 
 
 
+/-- The tactic block inside `Template` will be copied into the users editor.
+Use `Hole` inside the template for a part of the proof that should be replaced
+with `sorry`. -/
+elab "Template" t:tacticSeq : tactic => do
+  --let b ← saveState
+  Tactic.evalTactic t
+
+  -- -- Not correct
+  -- let gs ← Tactic.getUnsolvedGoals
+  -- if ¬ gs.isEmpty then
+  --   logWarning "To work as intended, `Template` should contain the entire proof"
+
+
+  -- -- Show an info whether the branch proofs all remaining goals.
+  -- let gs ← Tactic.getUnsolvedGoals
+  -- if gs.isEmpty then
+  --   logInfo "This branch finishes the proof."
+  -- else
+  --   logInfo "This branch leaves open goals."
+
+  -- let msgs ← Core.getMessageLog
+  -- b.restore
+  -- Core.setMessageLog msgs
+
+
+/-- A hole inside a template proof that will be replaced by `sorry`. -/
+elab "Hole" t:tacticSeq : tactic => do
+  Tactic.evalTactic t
+
+
+
+
+
 /-! # Make Game -/
 
 def GameLevel.getInventory (level : GameLevel) : InventoryType → InventoryInfo
diff --git a/server/index.mjs b/server/index.mjs
index d26bf22..3750008 100644
--- a/server/index.mjs
+++ b/server/index.mjs
@@ -118,7 +118,7 @@ wss.addListener("connection", function(ws, req) {
     });
 
     console.log(`[${new Date()}] Number of open sockets - ${socketCounter}`)
-    console.log(`[${new Date()}] Free RAM - ${Math.round(os.freemem() / 1024 / 1024)} / ${Math.round(os.totalmem() / 1024 / 1024)} GB`)
+    console.log(`[${new Date()}] Free RAM - ${Math.round(os.freemem() / 1024 / 1024)} / ${Math.round(os.totalmem() / 1024 / 1024)} MB`)
 
     ws.on('close', () => {
       console.log(`[${new Date()}] Socket closed - ${ip}`)
diff --git a/server/test/test_statement.lean b/server/test/test_statement.lean
index e6df5b2..6dfc33c 100644
--- a/server/test/test_statement.lean
+++ b/server/test/test_statement.lean
@@ -1,4 +1,5 @@
 import GameServer.Commands
+--import
 
 Game "Test"
 World "TestW"
@@ -6,5 +7,21 @@ Level 1
 
 LemmaDoc add_zero as "add_zero" in "Nat" "(nothing)"
 
-Statement add_zero (attr := simp, to_additive) "test" (n : Nat) : n + 0 = n := by
-  rfl
+@[simp] Statement add_zero "test" (n : Nat) : n + n = n := by
+  sorry
+
+Statement (n : Nat) : 0 + n = n := by
+  Template
+    induction n
+    Hole
+      simp
+    simp
+
+NewLemma add_zero
+
+--attribute [simp] add_zero
+
+#print add_zero
+
+theorem xy (n : Nat) : n + n = n := by
+  simp