How do I cut out a piece of text?

[Fredrik Lundin]

Hey!

I want to cut out a piece of text and put it in a new file.
Lets say that the text looks like this (VRML transform nodes):

  DEF faceA Transform {
   children Shape {
    appearance Appearance { material USE Testobjekt_0 }
    geometry USE faceA_0Geo
   }
  }
  DEF faceB Transform {
   children Shape {
    appearance Appearance { material USE Testobjekt_0 }
    geometry USE faceB_0Geo
   }
  }
  DEF faceC Transform {
   children Shape {
    appearance Appearance { material USE Testobjekt_0 }
    geometry USE faceC_0Geo
   }
  }

I would like to put this plart into a new file:

  DEF faceB Transform {
   children Shape {
    appearance Appearance { material USE Testobjekt_0 }
    geometry USE faceB_0Geo
   }
  }

Could someone help me with this?
I have tried quite alot to accomplish it, but I can't seem to eliminate the
stuff ahead of the wanted text portion.

/Fred