commas in Fanuc program? Leblond Makino 2-axis lathes

Has anyone ever seen anything like this in a Fanuc environment?

T0707M59 (FACE AND RGH. STEM)
G92S600
M42
G97S300M04
G00X1.27Z2.4M08
M65
G00X1.27Z1.9
G74P20Q21U0W0D0400F.008
N20G00Z1.635
N21G01X0.0
G00W.1
X1.22
G96S250
G73P22Q23U.01W0D0700F.008
N22G00X.309
G01Z1.635
X.499Z90.00,C.09
A180.00,R.048
X.56075Z.3125A105.00,R.008
Z.01
N23X1.22
G00X6.0Z2.625
M01

What the hell is the comma nonsense? X.499Z90.0,C.09 or A180.00,R.048

This is on 30 year old Leblond Makino CNC 2-axis slant bed chucker lathes.

I believe it is called Direct Drawing Dimension programming. ,C.09 is chamfering and ,R.008 is rounding.

yeah dcoupar is right. AND It is very useful.