[TYPO3-mvc] questions: @lazy, @inject, @api, constructors

[Barbara Schwarz]

Hello

I have a couple of questions:

1. Which fields should  in general be annotated with @lazy? Is there 
some guideline?

2. Is the @api annotation supported and if yes, when should it be used?

3. Is the @inject annotation supported? In the blog example, 
t3lib_div::makeInstance() is used for accessing the repositories in the 
controllers. Does it really create a new instance of a repository each 
time? If @inject is supported already, should it replace the 
t3lib_div::makeInstance function?

4. Is there a guideline/good practice rule which defines which fields of 
a class should be initialized in its constructor?

Thanks a lot in advance, I appreciate any tips!

Barbara