<s>
Planner	B-Operating_System
is	O
a	O
free	B-Application
personal	O
information	O
manager	O
for	O
Emacs	B-Application
written	O
in	O
Emacs	B-Operating_System
Lisp	I-Operating_System
.	O
</s>
<s>
and	O
takes	O
advantage	O
of	O
the	O
ease	O
of	O
keyboard	O
shortcuts	O
that	O
Emacs	B-Application
provides	O
for	O
fast	O
access	O
to	O
all	O
data	O
.	O
</s>
<s>
One	O
of	O
the	O
main	O
advantages	O
of	O
Planner	B-Operating_System
is	O
that	O
it	O
stores	O
all	O
data	O
as	O
hyperlinked	O
plain	O
text	B-General_Concept
files	I-General_Concept
which	O
enables	O
users	O
to	O
use	O
planner	B-Operating_System
data	O
in	O
a	O
variety	O
of	O
ways	O
.	O
</s>
<s>
One	O
of	O
them	O
is	O
publishing	O
your	O
planner	B-Operating_System
data	O
to	O
an	O
HTML	B-Language
page	O
.	O
</s>
<s>
Planner	B-Operating_System
was	O
originally	O
written	O
by	O
John	O
Wiegley	O
,	O
who	O
wrote	O
many	O
other	O
extensions	O
during	O
the	O
years	O
,	O
including	O
Alert	O
,	O
a	O
Growl-style	O
workalike	O
system	O
for	O
Emacs	B-Application
.	O
</s>
<s>
Planner	B-Operating_System
was	O
very	O
popular	O
within	O
the	O
Emacs	B-Application
community	O
at	O
first	O
,	O
but	O
has	O
been	O
surpassed	O
by	O
the	O
org-mode	B-Operating_System
package	O
with	O
time	O
.	O
</s>
<s>
Planner	B-Operating_System
is	O
released	O
under	O
the	O
GPL-3.0-or-later	B-License
license	O
.	O
</s>
