<s>
OSP	O
,	O
an	O
Environment	O
for	O
Operating	B-Operating_System
System	I-Operating_System
Projects	I-Operating_System
,	O
is	O
a	O
teaching	O
operating	B-General_Concept
system	I-General_Concept
designed	O
to	O
provide	O
an	O
environment	O
for	O
an	O
introductory	O
course	O
in	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
By	O
selectively	O
omitting	O
specific	O
modules	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
and	O
having	O
the	O
students	O
re-implement	O
the	O
missing	O
functionality	O
,	O
an	O
instructor	O
can	O
generate	O
projects	O
that	O
require	O
students	O
to	O
understand	O
fundamental	O
operating	B-General_Concept
system	I-General_Concept
concepts	O
.	O
</s>
