This is a basic question of modeling with NURBS curves, but I need it to know to make hair.

“Comb SOP” permits to do a nice short hair. When I are interested in long hair I use “spring SOP”. But that long hair is very basic. I want to add detail to that long hair and I don't know how to do it. In MAYA one possibility is to use a “radial field” to add detail. But in Houdini what ways are there?

I have been proving some software to do hair. And I have seen that the function COMB in others programs it works different that in Houdini. I Houdini I can control the growing hair with COMB but in other programs I can edit long hair. For example in Blender the comb function act like this. In XSI, Cinema3D, JoeAlter it is very similar to Blender too.

http://users.utu.fi/jhkarh/prog/particles/edit_teaser.swf [users.utu.fi]

Which way is the equivalent in Houdini to do the same?