Document explicit null overrides pattern for deleting parameters

fern/products/api-def/openapi-pages/extensions/ignore.mdx

@@ -1,9 +1,11 @@
 ---
 title: Ignoring elements
-description: Skip reading endpoints, schemas, or properties using the `x-fern-ignore` extension
+description: Skip reading endpoints, schemas, properties, or parameters using the `x-fern-ignore` extension
 ---
 
-If you want Fern to skip reading any endpoints, schemas, or properties, use the `x-fern-ignore` extension.
+If you want Fern to skip reading any endpoints, schemas, properties, or parameters, use the `x-fern-ignore` extension.
+
+## Ignore an endpoint
 
 To skip an endpoint, add `x-fern-ignore: true` at the operation level.
 
@@ -14,6 +16,7 @@ paths:
       x-fern-ignore: true
       ...
 ```
+## Ignore a schema
 
 To skip a schema, add `x-fern-ignore: true` at the schema level.
 
@@ -25,6 +28,7 @@ components:
       ...
 ```
 
+## Ignore a property
 To skip a property within a schema, add `x-fern-ignore: true` at the property level.
 
 ```yaml title="x-fern-ignore at property level in openapi.yml" {9}
@@ -39,3 +43,30 @@ components:
           x-fern-ignore: true
           type: string
 ```
+
+## Ignore a parameter
+
+To skip a parameter, add `x-fern-ignore: true` at the parameter level.
+```yaml title="x-fern-ignore at parameter level in openapi.yml" {7}
+paths:
+  /users:
+    get:
+      parameters:
+        - name: internalParam
+          in: query
+          x-fern-ignore: true
+          schema:
+            type: string
+```
+
+<Tip>
+To skip a parameter without modifying your base spec, use `null` values in your [overrides file](/api-definitions/overview/overrides) to delete parameters:
+
+```yaml title="overrides.yml" {5}
+paths:
+  /users:
+    get:
+      parameters:
+        - null  # Deletes the first parameter from base spec
+```
+</Tip>