+
+extern OSStatus CGSGetWindowTags(const CGSConnectionID cid, const CGSWindowID wid, CGSWindowTag *tags, int thirtyTwo);
+extern OSStatus CGSSetWindowTags(const CGSConnectionID cid, const CGSWindowID wid, CGSWindowTag *tags, int thirtyTwo);
+extern OSStatus CGSClearWindowTags(const CGSConnectionID cid, const CGSWindowID wid, CGSWindowTag *tags, int thirtyTwo);
+
+@interface NSApplication (ITCoreGraphicsHacks)
+- (CGSConnectionID)contextID;
+@end
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