fix @l to be optional
Change-Id: Ic4560336463c2887a2fa97b59bef2083166da715
diff --git a/KorAP_schemas/span.rng b/KorAP_schemas/span.rng
index feb2835..5314cf7 100644
--- a/KorAP_schemas/span.rng
+++ b/KorAP_schemas/span.rng
@@ -77,9 +77,11 @@
<data type="NCName"/>
</attribute>
</optional>-->
- <attribute name="l">
- <data type="integer"/>
- </attribute>
+ <optional>
+ <attribute name="l">
+ <data type="integer"/>
+ </attribute>
+ </optional>
<attribute name="from">
<choice>
<data type="integer"/>