Photoshop :: How Brushes Wrapped Along A Path

how to apply a brush to a path, but I'm not.  I literally want to know how the brush wraps...what it's technical sequence is around a complex path. 
 
I'm creating a set of brushes meant for wrapping around a text path.  I'm trying to push the limits of what's possible by doing some unique things and have had various results.  For example, when you create a path from a text layer, where does it create the start and end anchor points??  When I apply my brushes, they seem to always start in the bottom left of the text...is there a way to change that?  By better understanding the process of how it wraps around and inside each character, i can create better and more efficient brushes.