Lettuce Enhancement Proposals

[zwidny]

I am learning lettuce, and find keywords to define my features include:

• Given
• When
• Then
• And
• Feature:
• Background:
• Scenario:
• Scenario Outline:

and I find demo in https://github.com/gabrielfalcao/lettuce
I know And and Background, but I can't find the define about And and Background in lettuce doc.
I think add some describe of that will help newbie