diff --git a/src/HalDisplay.cpp b/src/HalDisplay.cpp
index 9e8b4b7..78eded7 100644
--- a/src/HalDisplay.cpp
+++ b/src/HalDisplay.cpp
@@ -355,7 +355,10 @@ bool HalDisplay::toggleInverted() {
 
 bool HalDisplay::isInverted() const { return inverted; }
 
-void HalDisplay::displayBuffer(RefreshMode mode, bool turnOffScreen) {
+void HalDisplay::displayBuffer(RefreshMode mode, bool turnOffScreen,
+                               bool /*forceCleanBaseOnHalf*/) {
+  // The simulator has no e-ink half-refresh base to keep clean, so the
+  // base-clearing guarantee this flag requests on-device is a no-op here.
   refreshDisplay(mode, turnOffScreen);
 }
 
diff --git a/src/HalDisplay.h b/src/HalDisplay.h
index d1386a8..7c3df39 100644
--- a/src/HalDisplay.h
+++ b/src/HalDisplay.h
@@ -41,7 +41,8 @@ class HalDisplay {
   bool isInverted() const;
 
   void displayBuffer(RefreshMode mode = RefreshMode::FAST_REFRESH,
-                     bool turnOffScreen = false);
+                     bool turnOffScreen = false,
+                     bool forceCleanBaseOnHalf = true);
   void displayBufferAsync(RefreshMode mode = RefreshMode::FAST_REFRESH);
   void waitRefreshComplete();
   bool supportsAsyncRefresh() const;
diff --git a/src/esp_http_client.h b/src/esp_http_client.h
index c5a7829..bf82680 100644
--- a/src/esp_http_client.h
+++ b/src/esp_http_client.h
@@ -13,6 +13,7 @@ enum esp_http_client_method_t {
   HTTP_METHOD_GET,
   HTTP_METHOD_POST,
   HTTP_METHOD_PUT,
+  HTTP_METHOD_DELETE,
 };
 
 enum esp_http_client_auth_type_t {
@@ -72,6 +73,8 @@ inline const char *methodName(esp_http_client_method_t method) {
     return "POST";
   case HTTP_METHOD_PUT:
     return "PUT";
+  case HTTP_METHOD_DELETE:
+    return "DELETE";
   case HTTP_METHOD_GET:
   default:
     return "GET";