What version are you running?
1.7.1
What's the URL of the page this enhancement relates to, if any?
https://reviewboard.thousandeyes.com/r/xxx/
Describe the enhancement and the motivation for it.
The reviewer should be able to close an issue. Suppose, for instance, that the Submitter makes a change but is not sure if it fixes the issue. The Reviewer should be able to verify it and close it. Also, the Reviewer might change his mind about an issue being really an issue (and then s/he should be able to drop it).
What operating system are you using? What browser?
Mac OS X. Chrome.
