Questions about TrackGen

It seems a lot of people here are using TrackGen to generate tracks/switch for OpenBVE. But I am a bit confused:

1. How do you guys deal with converging track? (Where two rails are merged into one), I just can't seems to find that options.

2. Is it possible to specify the block length? The right/left track needs different block length to not create a "crack".
ObjectBender on the other hand can specify the block length and does not have this problem. (For curved track I use ObjectBender instead, but it's still a problem for switches)

3. I am quite satisfied with the texture that comes out of the box, do I have to give appropriate credit for the textures if I publish it in the future?

Any answers would be appreciated, thanks! 

It doesn't do block length unfortunately (just fixed 25m chunks of plain track), although I could probably add that without too much trouble.
If I remember, I'll look at that this week......

As a good rule of thumb, unless you're doing something majorly odd with converging tracks, dropping one branch marginally (0.01m or so) should work.
If you want a physical set of points (a 'switch') that's the first tab.

The supplied texture is by Nils Busch.
He / I would appreciate credit, but it's not the end of the world.

But I am still confused about the first question, do I just rotate the track by 180 degree to get an converging track? Or does the program itself has an options to generate converging track?

Correct.

You could also use MirrorAll, RotateAll or a rotation in an animated file to achieve the same effect.