diff --git a/src/vcd/signal.rs b/src/vcd/signal.rs
index 541221e..7f40451 100644
--- a/src/vcd/signal.rs
+++ b/src/vcd/signal.rs
@@ -48,11 +48,16 @@ impl<'a> Signal<'a> {
         signal_enum.name()
     }
 
-    pub fn name_with_size(&self) -> String {
+    pub fn name_with_index(&self) -> String {
         let Signal(signal_enum) = &self;
         signal_enum.name_with_index()
     }
 
+    pub fn index(&self) -> Option<String> {
+        let Signal(signal_enum) = &self;
+        signal_enum.index()
+    }
+
     pub fn path(&self) -> &[String] {
         match self.0 {
             SignalEnum::Data { path, .. } => path,
@@ -240,6 +245,13 @@ impl SignalEnum {
             SignalEnum::Alias { name, .. } => name.clone(),
         }
     }
+
+    pub fn index(&self) -> Option<String> {
+        match self {
+            SignalEnum::Data { index, .. } => index.clone(),
+            SignalEnum::Alias { .. } => None,
+        }
+    }
 }
 
 // helper functions ultimately used by Signal's query functions later on