ion and a value.  
(<code>KLT_locType</code> is equal
to <code>float</code>.)  The value is interpreted as follows:
<ol>
<li> A positive value means the feature has just been found by
KLTSelectGoodFeatures() or KLTReplaceLostFeatures().  

<li> <code>KLT_TRACKED</code> (0) means the feature has been successfully tracked.  

<li> <code>KLT_NOT_FOUND</code> (-1) means that no feature could be found.  For example,
if the user attempts to find 150 features in an image, but only 125 can 
be found, then the
remai