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-rw-r--r--106stream.subx3
1 files changed, 3 insertions, 0 deletions
diff --git a/106stream.subx b/106stream.subx
index 84d0580b..9949ee7d 100644
--- a/106stream.subx
+++ b/106stream.subx
@@ -8,6 +8,9 @@
 # some primitives for operating on streams:
 #   - clear-stream (clears everything but the data size)
 #   - rewind-stream (resets read pointer)
+#
+# We need to do this in machine code because streams need to be opaque types,
+# and we don't yet support opaque types in Mu.
 
 == code
 #   instruction                     effective address                                                   register    displacement    immediate