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diff --git a/src/net/sourceforge/plantuml/project/lang/SubjectTask.java b/src/net/sourceforge/plantuml/project/lang/SubjectTask.java
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+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2020, Arnaud Roques
+ *
+ * Project Info:  http://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * http://plantuml.com/patreon (only 1$ per month!)
+ * http://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.project.lang;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.StringTokenizer;
+
+import net.sourceforge.plantuml.command.regex.IRegex;
+import net.sourceforge.plantuml.command.regex.RegexConcat;
+import net.sourceforge.plantuml.command.regex.RegexLeaf;
+import net.sourceforge.plantuml.command.regex.RegexOptional;
+import net.sourceforge.plantuml.command.regex.RegexResult;
+import net.sourceforge.plantuml.project.GanttDiagram;
+import net.sourceforge.plantuml.project.core.Task;
+
+public class SubjectTask implements SubjectPattern {
+
+	public Collection<VerbPattern> getVerbs() {
+		return Arrays.<VerbPattern>asList(new VerbLasts(), new VerbTaskStarts(), new VerbTaskStartsAbsolute(),
+				new VerbHappens(), new VerbEnds(), new VerbTaskEndsAbsolute(), new VerbIsColored(), new VerbIsDeleted(),
+				new VerbIsForTask(), new VerbLinksTo());
+	}
+
+	public IRegex toRegex() {
+		return new RegexConcat( //
+				new RegexLeaf("THEN", "(then[%s]+)?"), //
+				new RegexLeaf("SUBJECT", "\\[([^\\[\\]]+?)\\](?:[%s]+as[%s]+\\[([^\\[\\]]+?)\\])?"), //
+				new RegexOptional( //
+						new RegexConcat( //
+								RegexLeaf.spaceOneOrMore(), //
+								new RegexLeaf("on"), //
+								RegexLeaf.spaceOneOrMore(), //
+								new RegexLeaf("RESOURCE", "((?:\\{[^{}]+\\}[%s]*)+)") //
+						)) //
+		);
+	}
+
+	public Subject getSubject(GanttDiagram project, RegexResult arg) {
+		final String s = arg.get("SUBJECT", 0);
+		final String shortName = arg.get("SUBJECT", 1);
+		final String then = arg.get("THEN", 0);
+		final String resource = arg.get("RESOURCE", 0);
+		final Task result = project.getOrCreateTask(s, shortName, then != null);
+		if (result == null) {
+			throw new IllegalStateException();
+		}
+		if (resource != null) {
+			for (final StringTokenizer st = new StringTokenizer(resource, "{}"); st.hasMoreTokens();) {
+				final String part = st.nextToken().trim();
+				if (part.length() > 0) {
+					project.affectResource(result, part);
+				}
+			}
+
+		}
+		return result;
+	}
+}