Question: how to convert document in document mode to worksheet mode?

sometimes when I download something from Maple apps centers, such as this package, http://www.maplesoft.com/applications/view.aspx?SID=33406  I find the example documents there are written in .mw and when I open them, there are in document mode style, the fancy word like style which I can't stand looking at.  It has all the math input in italic and maple commands look different from classic Maple text. It very confusing, since I see something as   (0<x<1) which is valid in this document mode, but in classical maple, this is not valid code.

It seems Maple has 2 different syntax. One that works in document mode and one that is classical text maple.

I like to use only input as Maple notation which these documents do not do.

Is there a way to convert such .mw file to become standard classic worksheet mode? I know I will lose the chapter/section heading and all that.  I also tried selecting all in the document, then did Tools->options->Display->Input display->Maple notation, but nothing happend to the open document. It remained document mode with 2D math input.

When I save it as .mws, and open it again, it remains on document mode.

How to convert such documents to classical Maple syntax?