```ruby
cask :v1 => 'omnidazzle' do
  version '1.2'
  sha256 '47dfafb0740eeb164832804bd9ccf898f722057f919cd59197e04f9263f3a175'

  url "http://downloads2.omnigroup.com/software/MacOSX/10.6/OmniDazzle-#{version}.dmg"
  name 'OmniDazzle'
  homepage 'http://www.omnigroup.com/more'
  license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder

  app 'OmniDazzle.app'
end
```

Make OmniDazzle discontinued and add license.
user
```ruby
cask :v1 => 'omnidazzle' do
  version '1.2'
  sha256 '47dfafb0740eeb164832804bd9ccf898f722057f919cd59197e04f9263f3a175'

  url "http://downloads2.omnigroup.com/software/MacOSX/10.6/OmniDazzle-#{version}.dmg"
  name 'OmniDazzle'
  homepage 'https://support.omnigroup.com/omnidazzle-troubleshooting'
  license :gratis

  app 'OmniDazzle.app'

  caveats do
    discontinued
  end
end
```
assistant