no Jira - spelling
@@ -133,7 +133,7 @@ public interface FSIndex<T extends FeatureStructure> extends Iterable<T> {
*
* If there are multiple different FSs in the index which compare equal with the
* given feature structure, an arbitrary one is returned. This differs from the moveTo(fs)
- * operation which guarantees to move to the first feature structure occuring in the index
+ * operation which guarantees to move to the first feature structure occurring in the index
* in this case.
*
* @param fs A Feature Structure used a template to match with the Feature Structures in the index.
