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diff --git a/src/main/java/org/apache/commons/math3/ode/sampling/StepNormalizerMode.java b/src/main/java/org/apache/commons/math3/ode/sampling/StepNormalizerMode.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.math3.ode.sampling;
+
+
+/** {@link StepNormalizer Step normalizer} modes. Determines how the step size
+ * is interpreted.
+ * @see FieldStepNormalizer
+ * @see StepNormalizer
+ * @see StepNormalizerBounds
+ * @since 3.0
+ */
+public enum StepNormalizerMode {
+    /**
+     * Steps are fixed increments of the start value. In other words, they
+     * are relative to the start value.
+     *
+     * <p>If the integration start time is t0, then the points handled by
+     * the underlying fixed step size step handler are t0 (depending on
+     * the {@link StepNormalizerBounds bounds settings}), t0+h, t0+2h, ...</p>
+     *
+     * <p>If the integration range is an integer multiple of the step size
+     * (h), then the last point handled will be the end point of the
+     * integration (tend). If not, the last point may be the end point
+     * tend, or it may be a point belonging to the interval [tend - h ;
+     * tend], depending on the {@link StepNormalizerBounds bounds settings}.
+     * </p>
+     *
+     * @see StepNormalizer
+     * @see StepNormalizerBounds
+     */
+    INCREMENT,
+
+    /** Steps are multiples of a fixed value. In other words, they are
+     * relative to the first multiple of the step size that is encountered
+     * after the start value.
+     *
+     * <p>If the integration start time is t0, and the first multiple of
+     * the fixed step size that is encountered is t1, then the points
+     * handled by the underlying fixed step size step handler are t0
+     * (depending on the {@link StepNormalizerBounds bounds settings}), t1,
+     * t1+h, t1+2h, ...</p>
+     *
+     * <p>If the end point of the integration range (tend) is an integer
+     * multiple of the step size (h) added to t1, then the last point
+     * handled will be the end point of the integration (tend). If not,
+     * the last point may be the end point tend, or it may be a point
+     * belonging to the interval [tend - h ; tend], depending on the
+     * {@link StepNormalizerBounds bounds settings}.</p>
+     *
+     * @see StepNormalizer
+     * @see StepNormalizerBounds
+     */
+    MULTIPLES;
+}