Mon, 17 May 1999 21:31:47 +0200 backup operation replaces transaction;
wenzelm [Mon, 17 May 1999 21:31:47 +0200] rev 6660
backup operation replaces transaction;
Mon, 17 May 1999 21:31:08 +0200 removed get_nodes;
wenzelm [Mon, 17 May 1999 21:31:08 +0200] rev 6659
removed get_nodes; added keys; all_preds / all_succs: topological order; added del_nodes;
Mon, 17 May 1999 19:15:35 +0200 remove_thy;
wenzelm [Mon, 17 May 1999 19:15:35 +0200] rev 6658
remove_thy;
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