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diff --git a/include/fopen-vms.h b/include/fopen-vms.h
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+/* Macros for the 'type' part of an fopen, freopen or fdopen.
+
+ <Read|Write>[Update]<Binary file|text file>
+
+ This version is for VMS systems, where text and binary files are
+ different.
+ This file is designed for inclusion by host-dependent .h files. No
+ user application should include it directly, since that would make
+ the application unable to be configured for both "same" and "binary"
+ variant systems. */
+
+#define FOPEN_RB "rb","rfm=var"
+#define FOPEN_WB "wb","rfm=var"
+#define FOPEN_AB "ab","rfm=var"
+#define FOPEN_RUB "r+b","rfm=var"
+#define FOPEN_WUB "w+b","rfm=var"
+#define FOPEN_AUB "a+b","rfm=var"
+
+#define FOPEN_RT "r"
+#define FOPEN_WT "w"
+#define FOPEN_AT "a"
+#define FOPEN_RUT "r+"
+#define FOPEN_WUT "w+"
+#define FOPEN_AUT "a+"