[RTTY] Cut numbers in RTTY -- why?

[Jim Reisert AD1C]

This weekend, I copied the following stations sending cut numbers (5NN):

	KU4J WW7OR WY4Y NR4X VE7FO

My question is WHY?  It takes an extra character to transmit:

	<FIGS>5<LTRS>NN

instead of:

	<FIGS>599

I wonder if this is a "feature" of Writelog if you have cut numbers enabled 
for CW?

73 - Jim AD1C

-- 
Jim Reisert AD1C, 7 Charlemont Court, North Chelmsford, MA 01863
USA +978-251-9933, <jjreisert at alum.mit.edu>, http://www.ad1c.com
PGP Fingerprint: D8E2 3D78 339F A7F1 8C13  1193 B5D1 4FB6 79D1 70DC