Campaign Creations

i have noticed that as a teaser/advertisement, in game screen shots are possible to capture.
what command or in warcraft 3, or on the key board am i to use to capture a screeny?
i would like to capture heroes and/or units in order to draw them by my own style of art work. [which i admit, ends up naive]

Press Print Screen. Wc3 will generate the screenshot in a folder in the game's base directory.

most obliged doack