Explanation :

vName: Write the name of the image file.

vPresent : To specify the size of image you may either use
preset or width height option.

vWidth : set for width worksheets.

vHeight : set for height worksheets.

vResolution: refers the number of pixels per inch.
Pixel is a single point in a graphic image and a pixel can
have only one colors.

vColor mode : set type color.
RGB (Red, Green, Blue) use for desktop.
CMYK ( Cyan, Magenta, Yellow, key(black)) use print images.

vBackground Contents : set color Background.