Space in the module t-rsteps

[Mojca Miklavec <mojca.miklavec.lists@gmail.com>]

Consider the following example in t-rsteps:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\usemodule[rsteps]
\setupcolor[state=start]
\definehead[Subject][subject]
\setuphead[Subject][page=yes,style=\bfb]

\starttext

\StartSteps[Title]
a\NextStep b
\StopSteps

\StartSteps[Title 2]
a\FromStep[2]{b}
\StopSteps

\stoptext

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

On the page 2, it typesets something like

"a\par b"

and on the page 4 it typesets something similar as

"a\ b"

instead of "ab" in both cases.

My questions:

#1. I don't completely understand the mechanism behind rsteps, but is 
there a way to supress the additional space introduced between 
successive steps?

#2. How can I use \vfill (to write something on the bottom of the page)?

#3. If I write

The beginning \FromStep[2]{of a \dorecurse{20}{very }long sentence}

than the spacing in the first part is affected by the TeX line-breaking 
algorithm (in slide 1 normal spacing is used and in slice 2 it is moved 
slightly to the left or to the right)

The same goes for vertical alignment once the slide is full

#4. How could I use \FromStep[x][reserve] outside the math environment? 
This could have solved the problem with the alignment under #3.

Thank you,
	Mojca