diff --git a/roboquant/event.py b/roboquant/event.py
index 765719e..1145727 100644
--- a/roboquant/event.py
+++ b/roboquant/event.py
@@ -92,10 +92,6 @@ def price(self, price_type: str = "DEFAULT") -> float:
             case _:
                 return self.ohlcv[3]
 
-    @property
-    def close(self):
-        return self.ohlcv[3]
-
     def volume(self, volume_type: str = "DEFAULT") -> float:
         return self.ohlcv[4]
 
diff --git a/roboquant/order.py b/roboquant/order.py
index 60e814a..b30ee1a 100644
--- a/roboquant/order.py
+++ b/roboquant/order.py
@@ -129,4 +129,8 @@ def is_sell(self):
 
     @property
     def remaining(self):
+        """Return the remaining to be filled.
+
+        In case of a sell order, the remaining can be a negative number.
+        """
         return self.size - self.fill
diff --git a/roboquant/signal.py b/roboquant/signal.py
index ab59012..b60e879 100644
--- a/roboquant/signal.py
+++ b/roboquant/signal.py
@@ -12,7 +12,9 @@ class SignalType(Flag):
 
 @dataclass(slots=True, frozen=True)
 class Signal:
-    """Signal that a strategy can create"""
+    """Signal that a strategy can create.
+    It contains both a rating between -1.0 and 1.0 and a type.
+    """
 
     rating: float
     type: SignalType = SignalType.BOTH