Index: dlg.c
===================================================================
--- dlg.c	(revision 31471)
+++ dlg.c	(revision 31472)
@@ -506,6 +506,26 @@
 	drc_rlist_pcb2dlg(); /* for the run time */
 }
 
+static void rlist_btn_export_cb(void *hid_ctx, void *caller_data, rnd_hid_attribute_t *attr_inp)
+{
+	drc_rlist_ctx_t *ctx = caller_data;
+	rnd_hid_row_t *row = rnd_dad_tree_get_selected(&(ctx->dlg[ctx->wrlist]));
+	pcb_board_t *pcb = (pcb_board_t *)rnd_gui->get_dad_hidlib(hid_ctx);
+
+	if (row == NULL) {
+		rnd_message(RND_MSG_ERROR, "Select a rule first\n");
+		return;
+	}
+
+	rnd_actionva(&pcb->hidlib, "DrcQueryExport", row->cell[0], NULL);
+}
+
+static void rlist_btn_import_cb(void *hid_ctx, void *caller_data, rnd_hid_attribute_t *attr_inp)
+{
+
+}
+
+
 static void rlist_select(rnd_hid_attribute_t *attrib, void *hid_ctx, rnd_hid_row_t *row)
 {
 	rnd_hid_attr_val_t hv;
@@ -710,6 +730,10 @@
 					RND_DAD_CHANGE_CB(drc_rlist_ctx.dlg, rlist_btn_edit_cb);
 				RND_DAD_BUTTON(drc_rlist_ctx.dlg, "Toggle disable");
 					RND_DAD_CHANGE_CB(drc_rlist_ctx.dlg, rlist_btn_toggle_cb);
+				RND_DAD_BUTTON(drc_rlist_ctx.dlg, "Export...");
+					RND_DAD_CHANGE_CB(drc_rlist_ctx.dlg, rlist_btn_export_cb);
+				RND_DAD_BUTTON(drc_rlist_ctx.dlg, "Import...");
+					RND_DAD_CHANGE_CB(drc_rlist_ctx.dlg, rlist_btn_import_cb);
 			RND_DAD_END(drc_rlist_ctx.dlg);
 		RND_DAD_END(drc_rlist_ctx.dlg);
 
Index: drc_query.c
===================================================================
--- drc_query.c	(revision 31471)
+++ drc_query.c	(revision 31472)
@@ -648,6 +648,56 @@
 	return 0;
 }
 
+static const char pcb_acts_DrcQueryExport[] = "DrcQueryExport(ruleID, [filename], [format])\n";
+static const char pcb_acth_DrcQueryExport[] = "Export a rule and related definitions to a file.";
+static fgw_error_t pcb_act_DrcQueryExport(fgw_arg_t *res, int argc, fgw_arg_t *argv)
+{
+	int ires = 0;
+	const char *id, *fn = NULL, *fmt = "tEDAx";
+	char *autofree = NULL;
+	rnd_hidlib_t *hl = RND_ACT_HIDLIB;
+	const char *pat_tdx[] = {".tdx", NULL};
+	const char *pat_lht[] = {".lht", NULL};
+	const rnd_hid_fsd_filter_t flt[] = {
+		{"tEDAx", "tEDAx", pat_tdx},
+		{"lihata", "lihata", pat_lht},
+		{NULL, NULL, NULL}
+	};
+
+	RND_ACT_CONVARG(1, FGW_STR, DrcQueryExport, id = argv[1].val.str);
+	RND_ACT_MAY_CONVARG(2, FGW_STR, DrcQueryExport, fn = argv[2].val.str);
+	RND_ACT_MAY_CONVARG(3, FGW_STR, DrcQueryExport, fmt = argv[3].val.str);
+
+	if (fn == NULL) {
+		const char *ext = ".tdx", *sep;
+		char *fnid = rnd_concat(id, ext, NULL);
+TODO("cleanup: fix format selection: generalize dlg_loadsave.c's subfmt code");
+		fn = autofree = rnd_gui->fileselect(rnd_gui, "Export drc_query rule", "Export a drc_query rule and related definitions",
+			fnid, ext, flt, "export_drc_query", 0, NULL);
+		free(fnid);
+		if (fn == NULL)
+			return -1;
+
+		sep = strrchr(fn, '.');
+		if (sep != NULL) {
+			sep++;
+			switch(*sep) {
+				case 't': case 'T': fmt = "tEDAx"; break;
+				case 'l': case 'L': fmt = "lihata"; break;
+			}
+		}
+	}
+
+	switch(*fmt) {
+		case 't': case 'T': ires = rnd_actionva(hl, "savetedax", "drc_query", fn, id, NULL); break;
+		default: rnd_message(RND_MSG_ERROR, "Can not save in format '%s'\n", fmt); ires = -1; break;
+	}
+
+	free(autofree);
+	RND_ACT_IRES(ires);
+	return 0;
+}
+
 #include "dlg.c"
 
 static pcb_drc_impl_t drc_query_impl = {"drc_query", "query() based DRC", "drcquerylistrules"};
@@ -656,7 +706,8 @@
 	{"DrcQueryListRules", pcb_act_DrcQueryListRules, pcb_acth_DrcQueryListRules, pcb_acts_DrcQueryListRules},
 	{"DrcQueryEditRule", pcb_act_DrcQueryEditRule, pcb_acth_DrcQueryEditRule, pcb_acts_DrcQueryEditRule},
 	{"DrcQueryRuleMod", pcb_act_DrcQueryRuleMod, pcb_acth_DrcQueryRuleMod, pcb_acts_DrcQueryRuleMod},
-	{"DrcQueryDefMod", pcb_act_DrcQueryDefMod, pcb_acth_DrcQueryDefMod, pcb_acts_DrcQueryDefMod}
+	{"DrcQueryDefMod", pcb_act_DrcQueryDefMod, pcb_acth_DrcQueryDefMod, pcb_acts_DrcQueryDefMod},
+	{"DrcQueryExport", pcb_act_DrcQueryExport, pcb_acth_DrcQueryExport, pcb_acts_DrcQueryExport}
 };
 
 int pplg_check_ver_drc_query(int ver_needed) { return 0; }