{Profile} Oracle Applications Look and Feel

Valid Values for Profile Oracle Applications Look and Feel that can be set at any of the Site, Application, Responsibility or User levels:

There are six profile values we can choose

• ABS Desktop Look and Feel (Order to Cash)
• Base Desktop Look And Feel : the root of all LAF implementations.
• Browser Look And Feel : the default LAF that conforms to Oracle’s corporate UI guidelines.
• Minimal Look And Feel : Generates "minimal" content to reduce the size of HTML pages and overall network overhead.
• Siebel CRM OnDemand Look and Feel
• Simple Desktop Look And Feel

So far , I don’t find what’s the difference ?