Questions about PSD file formats

During thestudy thefile formatthearticleraisesquestions.

Question 1.

I would like to knowhow toanalyzethe image data.

I've a document that describesthe fileformat, a description ofthe image datais insufficient.

So, description of theimage dataare additionallyrequired.

Question 2.

There isthe question oflayer and mask information section.

The format of thedocument and thephysical fileispresent inthe other portions.

So, I would like to knowthe description formore info.

Thanks in advance!