<s>
It	O
is	O
licensed	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Some	O
users	O
consider	O
Gri	O
similar	O
to	O
LaTeX	B-Application
,	O
since	O
both	O
provide	O
extensive	O
power	O
as	O
a	O
reward	O
for	O
tolerating	O
a	O
learning	O
curve	O
.	O
</s>
<s>
Gri	O
can	O
make	O
x-y	O
graphs	O
,	O
contour	O
graphs	O
,	O
and	O
image	O
graphs	O
,	O
outputting	O
the	O
results	O
in	O
PostScript	B-Language
format	O
.	O
</s>
<s>
A	O
limited	O
TeX-like	O
syntax	O
provides	O
common	O
mathematical	O
symbols	O
.	O
</s>
