diff --git a/specification.md b/specification.md
index fddd77a..87efa57 100644
--- a/specification.md
+++ b/specification.md
@@ -312,14 +312,17 @@ interface LocationLink {
 	targetUri: string;
 
 	/**
-	 * The full target range of this link.
+	 * The full target range of this link. If the target for example is a symbol then target range is the
+	 * range enclosing this symbol not including leading/trailing whitespace but everything else
+	 * like comments. This information is typically used to highlight the range in the editor.
 	 */
 	targetRange: Range;
 
 	/**
-	 * The span of this link.
+	 * The range that should be selected and revealed when this link is being followed, e.g the name of a function.
+	 * Must be contained by the the `targetRange`. See also `DocumentSymbol#range`
 	 */
-	targetSelectionRange?: Range;
+	targetSelectionRange: Range;
 }
 ```