<s>
MacPerspective	B-Application
was	O
a	O
3D	O
perspective	O
drawing	O
program	O
developed	O
for	O
the	O
Apple	B-Device
Macintosh	I-Device
computer	I-Device
in	O
1985	O
.	O
</s>
<s>
It	O
enjoyed	O
modest	O
success	O
through	O
the	O
early	O
1990s	O
when	O
it	O
was	O
still	O
functional	O
on	O
System	B-Operating_System
7	I-Operating_System
.	O
</s>
