diff --git a/CoreGraphics/include/CoreGraphics/CGPDFDictionary.h b/CoreGraphics/include/CoreGraphics/CGPDFDictionary.h
index 54d269a5..3332ab53 100644
--- a/CoreGraphics/include/CoreGraphics/CGPDFDictionary.h
+++ b/CoreGraphics/include/CoreGraphics/CGPDFDictionary.h
@@ -1 +1,11 @@
+#ifndef COREGRAPHICS_CGPDFDICTIONARY_H
+#define COREGRAPHICS_CGPDFDICTIONARY_H
+
+#include <CoreGraphics/CGPDFObject.h>
+
 typedef struct CGPDFDictionary *CGPDFDictionaryRef;
+typedef void (*CGPDFDictionaryApplierFunction)(const char *key, CGPDFObjectRef value, void *info);
+
+void CGPDFDictionaryApplyFunction(CGPDFDictionaryRef dict, CGPDFDictionaryApplierFunction function, void *info);
+
+#endif // COREGRAPHICS_CGPDFDICTIONARY_H
\ No newline at end of file
diff --git a/CoreGraphics/include/CoreGraphics/CGRemoteOperation.h b/CoreGraphics/include/CoreGraphics/CGRemoteOperation.h
index 76764989..116c9b2b 100644
--- a/CoreGraphics/include/CoreGraphics/CGRemoteOperation.h
+++ b/CoreGraphics/include/CoreGraphics/CGRemoteOperation.h
@@ -55,6 +55,7 @@ typedef struct CGScreenUpdateMoveDelta {
 } CGScreenUpdateMoveDelta;
 
 typedef void (*CGScreenUpdateMoveCallback)(CGScreenUpdateMoveDelta delta, size_t count, const CGRect *rects, void *userInfo);
+typedef void (*CGScreenRefreshCallback)(uint32_t count, const CGRect *rects, void *userInfo);
 
 #define kCGEventFilterMaskPermitAllEvents (kCGEventFilterMaskPermitLocalMouseEvents | kCGEventFilterMaskPermitLocalKeyboardEvents | kCGEventFilterMaskPermitSystemDefinedEvents)
 
@@ -62,4 +63,10 @@ typedef void (*CGScreenUpdateMoveCallback)(CGScreenUpdateMoveDelta delta, size_t
 extern CGError CGScreenRegisterMoveCallback(CGScreenUpdateMoveCallback callback, void *userInfo);
 extern void CGScreenUnregisterMoveCallback(CGScreenUpdateMoveCallback callback, void *userInfo);
 
+CGError CGRegisterScreenRefreshCallback(CGScreenRefreshCallback callback, void *userInfo);
+void CGUnregisterScreenRefreshCallback(CGScreenRefreshCallback callback, void *userInfo);
+CGError CGWaitForScreenRefreshRects(CGRect * _Nullable *rects, uint32_t *count);
+void CGReleaseScreenRefreshRects(CGRect *rects);
+CGError CGWaitForScreenUpdateRects(CGScreenUpdateOperation requestedOperations, CGScreenUpdateOperation *currentOperation, CGRect * _Nullable *rects, size_t *rectCount, CGScreenUpdateMoveDelta *delta);
+
 #endif
diff --git a/CoreGraphics/include/CoreGraphics/CoreGraphics.h b/CoreGraphics/include/CoreGraphics/CoreGraphics.h
index 96d26ecb..e25e6cb0 100644
--- a/CoreGraphics/include/CoreGraphics/CoreGraphics.h
+++ b/CoreGraphics/include/CoreGraphics/CoreGraphics.h
@@ -32,6 +32,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 #import <CoreGraphics/CGShading.h>
 #import <CoreGraphics/CGWindowLevel.h>
 #import <CoreGraphics/CGWindow.h>
+#import <CoreGraphics/CGRemoteOperation.h>
 
 #include <CoreGraphics/CGEvent.h>
 #include <CoreGraphics/CGPDFContext.h>
diff --git a/CoreText/CTFontDescriptor.m b/CoreText/CTFontDescriptor.m
index cf68d33b..d5611dae 100644
--- a/CoreText/CTFontDescriptor.m
+++ b/CoreText/CTFontDescriptor.m
@@ -1,5 +1,7 @@
 #import <CoreText/CTFontDescriptor.h>
 
+#include <stdio.h>
+
 CFTypeRef CTFontDescriptorCopyAttribute(CTFontDescriptorRef descriptor, CFStringRef attribute)
 {
     printf("STUB %s\n", __PRETTY_FUNCTION__);
diff --git a/CoreText/CTParagraphStyle.m b/CoreText/CTParagraphStyle.m
index 8e98dceb..08419e1c 100644
--- a/CoreText/CTParagraphStyle.m
+++ b/CoreText/CTParagraphStyle.m
@@ -1,5 +1,7 @@
 #import <CoreText/CTParagraphStyle.h>
 
+#include <stdio.h>
+
 CTParagraphStyleRef CTParagraphStyleCreate(const CTParagraphStyleSetting *settings, size_t settingCount) {
     printf("STUB %s\n", __PRETTY_FUNCTION__);
     return nil;