e70152e44cc66cc599ff6b699eb8adc07f3e656a
kent
  Sat May 24 21:09:34 2014 -0700
Adding Copyright NNNN Regents of the University of California to all files I believe with reasonable certainty were developed under UCSC employ or as part of Genome Browser copyright assignment.
diff --git src/lib/crTree.c src/lib/crTree.c
index 54e82a7..4936dea 100644
--- src/lib/crTree.c
+++ src/lib/crTree.c
@@ -1,15 +1,18 @@
+/* Copyright (C) 2009 The Regents of the University of California 
+ * See README in this or parent directory for licensing information. */
+
 /* crTree chromosome r tree. This module creates and uses a disk-based index that can find items
  * that overlap with a chromosome range - something of the form chrN:start-end - with a
  * minimum of disk access.  It is implemented with a combination of bPlusTrees and r-trees. 
  * The items being indexed can overlap with each other.  
  * 
  * There's two main sides to using this module - creating an index, and using it.
  *
  * The first step of index creation is actually to insure that the file being indexed
  * is ordered by chromosome,start,end.  For a .bed file you can insure this
  * with the command:
  *     sort -k1,1 -k2,2n -k3,3n unsorted.bed > sorted.bed
  * Note that the the chromosome field is sorted alphabetically and the start and end
  * fields are sorted numerically.
  *
  * Once this is done then the index creation program scans the input file, and