void KLTStoreFeatureList(
     KLT_FeatureList fl,
     KLT_FeatureTable ft,
     int frame);
void KLTStoreFeatureHistory(
     KLT_FeatureHistory fh,
     KLT_FeatureTable ft,
     int feat);
fl in the frame 
column of ft.  The number frame must be between 0 and
ft->nFrames - 1.  The nFeatures field of both
fl and ft
must be the same.
KLTStoreFeatureHistory() is similar, except that 
fh is stored in the feat 
row of ft.
void KLTExtractFeatureList(
     KLT_FeatureList fl,
     KLT_FeatureTable ft,
     int frame);
void KLTExtractFeatureHistory(
     KLT_FeatureHistory fh,
     KLT_FeatureTable ft,
     int feat);
fl to the 
frame column
of ft, while
KLTExtractFeatureHistory() sets fh to the 
feat row 
of ft.  The same restrictions apply as those of the
KLTStore...() functions.