diff -r e753a7f967c8 -r ae8775e0bc7a src/Dialect.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Dialect.h	Sat Dec 12 00:01:57 2020 +0100
@@ -0,0 +1,44 @@
+/**
+ * Relational pipes
+ * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "INIWriter.h"
+
+namespace relpipe {
+namespace out {
+namespace ini {
+
+class INIWriter;
+
+class Dialect {
+public:
+	/**
+	 * Configure the writer by calling its setOption() method.
+	 * 
+	 * The dialect may be also derived from another dialect (extend or modify it),
+	 * but obviously there might be no cyclic dependencies among them.
+	 */
+	virtual void apply(INIWriter& writer) = 0;
+
+	virtual ~Dialect() {
+	}
+
+};
+
+}
+}
+}