+#ifndef SHARED_DEFS_H
+#define SHARED_DEFS_H
+
// =========================================================
// Shared declarations for all commands, written by Samual
// Last updated: December 13th, 2011
// =========================================================
// identifiers for subfunction requests by the command code structure
-#define CMD_REQUEST_COMMAND 1
-#define CMD_REQUEST_USAGE 2
+const int CMD_REQUEST_COMMAND = 1;
+const int CMD_REQUEST_USAGE = 2;
+#endif
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