I would like to implement Note style fields like in here (excerpt from https://developer.android.com/training/graphics/opengl/environment.html#manifest for demonstration)

How can I do this in LaTeX ?
P.S. Please change the tags if I have chosen the wrong ones.
EDIT
I have came up with something more or less like this:
\vspace{1em}\hspace{1.5em}
\hbox{%
\vrule\hspace{.5em}\parbox{.9\textwidth}%
{
\textbf{Note:}
Text.....
}
}
\vspace{1em}
Which produces:

But I am having problems to define an environment with this.


mdblockquote). – Manuel Jan 14 '14 at 15:20