<s>
IS4C	B-Language
or	O
Integrated	O
Systems	O
for	O
Co-ops	O
is	O
a	O
free	B-Application
web-based	B-Application
point	O
of	O
sale	O
software	O
for	O
retail	O
stores	O
initially	O
developed	O
by	O
Tak	O
Tang	O
for	O
the	O
Wedge	O
Community	O
Co-op	O
in	O
Minneapolis	O
,	O
Minnesota	O
.	O
</s>
<s>
The	O
software	O
utilizes	O
an	O
SQL	B-Language
database	I-Language
and	O
enables	O
tracking	O
of	O
customer	O
purchase	O
totals	O
that	O
cooperatives	O
use	O
in	O
calculating	O
patronage	O
refunds	O
for	O
their	O
members	O
.	O
</s>
<s>
IS4C	B-Language
and	O
Fannie	O
,	O
its	O
backend	O
management	O
system	O
were	O
written	O
almost	O
exclusively	O
in	O
PHP	B-Application
.	O
</s>
<s>
IS4C	B-Language
software	O
is	O
used	O
primarily	O
by	O
food	O
cooperatives	O
and	O
has	O
been	O
released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Versions	O
of	O
IS4C	B-Language
have	O
been	O
adopted	O
by	O
Whole	O
Foods	O
Co-op	O
,	O
People	O
's	O
Food	O
Co-op	O
,	O
Alberta	O
Cooperative	O
Grocery	O
,	O
River	O
Valley	O
Co-op	O
,	O
and	O
the	O
Clintonville	O
Community	O
Market	O
Co-op	O
in	O
Columbus	O
,	O
Ohio	O
.	O
</s>
