Taking screenshots during install

[Nik Clayton]

Michael W. Lucas wrote:
> Install without taking screenshots.
> 
> Then run in console-only mode.  On the main console, run
> sysinstall(8).  On the second virtual console, use "vidcontrol -p" to
> capture the contents of the first screen to a screenshot file.  Then
> use scr2png to transform that screen shot into a .png.

+1 -- that's the specific use case that the '-p' option to vidcontrol, 
and the scr2* utilities were intended to support (it's how the 
installation screenshots in the Handbook were/are generated).

N