[Genome] Subtracting BED lists

[Jeffrey Rosenfeld]

Do you have a downloadable program that will subtract two lists of BED 
points.  I have found bedIntersect in the Kent source files and it has a 
similar function, but I could not find a program that does the reverse. 
  For two given BED files, I want a list of genomic locations that are 
only in one of them.

Thank You,

Jeffrey Rosenfeld
Cold Spring Harbor Lab