<s>
plan	O
is	O
a	O
calendar	B-Application
and	O
day	O
planner	O
program	B-Application
for	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
based	O
on	O
the	O
Motif	B-Application
widget	B-Library
set	I-Library
.	O
</s>
<s>
plan	O
is	O
free	B-Application
software	I-Application
released	O
under	O
a	O
custom	O
permissive	O
license	O
.	O
</s>
<s>
An	O
accompanying	O
program	B-Application
pland	O
reminds	O
the	O
user	O
of	O
appointments	O
by	O
showing	O
a	O
warning	O
window	O
or	O
running	O
an	O
arbitrary	O
shell	B-Language
script	I-Language
.	O
</s>
