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-rw-r--r--ipl/data/exp.rsg4
1 files changed, 4 insertions, 0 deletions
diff --git a/ipl/data/exp.rsg b/ipl/data/exp.rsg
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--- /dev/null
+++ b/ipl/data/exp.rsg
@@ -0,0 +1,4 @@
+<expr>::=<term>|<term>|<term>|<term>+<expr>
+<term>::=<elem>|<elem>|<elem>*<term>
+<elem>::=<'xyz'>|<'0123'>|(<expr>)
+<expr>30