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-rw-r--r--libdimensionxx/dimensionxx/cookie.hpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/libdimensionxx/dimensionxx/cookie.hpp b/libdimensionxx/dimensionxx/cookie.hpp
index acb783d..639fbfe 100644
--- a/libdimensionxx/dimensionxx/cookie.hpp
+++ b/libdimensionxx/dimensionxx/cookie.hpp
@@ -21,6 +21,9 @@
#ifndef DIMENSIONXX_COOKIE_HPP
#define DIMENSIONXX_COOKIE_HPP
+// Some internal magic to use C FILE* I/O with C++ streams. Currently this ties
+// us to Linux and glibc, but in the future, this will be portable.
+
#include <istream>
#include <ostream>
#include <cstdio>