Closing empty elements with /> on the Start tag

The XML being generated by ECS is quite bulky due to many unnecessary closing
tags.

My file uses a lot of attribute-only tags:

1. <start attr1="value" attr2="value"/>

When I output via ECS I get:

2. <start attr1="value" attr2="value"></start>

Is there an easy way to have empty elements automatically closed by just
prepending "/" before closing the opening tag (as in "1" above)?

Thanks.

Pete Cassetta