her structs and arrays,
   the allocators are specified in environ.h.  Default functions
   are malloc and free.  We have also provided a sample custom
   allocator/deallocator for Pix, in pixalloc.c.
</pre>


<h2> <A NAME="CONTENTS">
What's in leptonica?
</h2>
<pre>
1. Rasterops

   This is a source for a clean, fast implementation of rasterops.
   You can find details starting at the Leptonica home page,
   and also by looking directly at the source code.
   Some of the low-level code is in roplow.c, and 