What is a digital picture?

A digital picture is a computer file.The file contains data of a picture. A digital picture's file is formated.There are lot of kinds of formats, but only few of them are used normally, such as BMP and GIF.

What kinds of digital picture may be added into PM?

The BMP, GIF, JPEG, Exif, PNG, TIFF, WMF, EMF, and ICON format files may be added into PM.

What is the PM album?

A PM album is a directory in a disk. It contains a database file named pictures.pcs and all the files of the digital pictures in it.