Thu, 20 Sep 2012 02:42:48 +0200 blanchet add rel as first-class citizen of BNF
Thu, 20 Sep 2012 02:42:48 +0200 blanchet renamed "rel_def" to "rel_O_Gr"
Thu, 20 Sep 2012 02:42:48 +0200 blanchet renamed "sum_setl" to "setl" and similarly for r
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