extern const char* const peakfile_suffix;
extern const char* const backup_suffix;
extern const char* const temp_suffix;
extern const char* const peakfile_suffix;
extern const char* const backup_suffix;
extern const char* const temp_suffix;
+extern const char* const history_suffix;
const char* const peakfile_suffix = X_(".peak");
const char* const backup_suffix = X_(".bak");
const char* const temp_suffix = X_(".tmp");
const char* const peakfile_suffix = X_(".peak");
const char* const backup_suffix = X_(".bak");
const char* const temp_suffix = X_(".tmp");
+const char* const history_suffix = X_(".history");