<s>
THINK	B-Application
Reference	I-Application
was	O
a	O
documentation	O
database	O
and	O
browser	O
developed	O
by	O
Symantec	O
for	O
programmers	O
on	O
the	O
classic	B-Application
Mac	I-Application
OS	I-Application
platform	O
.	O
</s>
<s>
It	O
was	O
included	O
with	O
the	O
THINK	B-Operating_System
C	I-Operating_System
development	O
environment	O
sold	O
by	O
Symantec	O
,	O
and	O
contained	O
a	O
hypertext	O
version	O
of	O
Apple	O
Computer	O
's	O
Macintosh	B-Device
Toolbox	I-Device
API	B-General_Concept
specifications	O
,	O
along	O
with	O
illustrative	O
code	O
samples	O
.	O
</s>
<s>
THINK	B-Application
Reference	I-Application
was	O
discontinued	O
in	O
1994	O
.	O
</s>
