Explain that draft_opcode_tables is the "canonical" file for
opcodes **before** doing CSV files.
+comments from jacob:
+the table I've been using for fp transcendental ops
+https://libre-soc.org/openpower/power_trans_ops/
+
+program for syncing parts of that table
+https://libre-soc.org/openpower/power_trans_ops_copy_from_PO59_table.py/
+
+it copies from the 2d grid to the tables lower down
+
# Rita
TODO