Quark vertices fix

Hi,

I'm beginning to use Quark, with really simple models. But even with them, I must remind myself to keep pressing ctrl in order to get every vertex in the correct place, so brushes that are side by side don't show flaws (misplaced vertices that should have the same position).

Well, I'm wondering if Quark has something like 3DStudio's vertex fusion. I don't really want to merge vertex, just an algorithem that would look like this:

given a threshold t,
for every vertex v1 in a group
   for every other vertex v2 in the same group
      if (position(v1) - position(v2) < t)
          position(v1) = position(v2);

get the idea? This way, after a model has been created, if two vertex are close enough, but not perfectly placed, they would share the same position, no vertex misplaced...

Is there something like that? :m