<s>
Software	B-General_Concept
requirements	I-General_Concept
for	O
a	O
system	O
are	O
the	O
description	O
of	O
what	O
the	O
system	O
should	O
do	O
,	O
the	O
service	O
or	O
services	O
that	O
it	O
provides	O
and	O
the	O
constraints	O
on	O
its	O
operation	O
.	O
</s>
<s>
The	O
activities	O
related	O
to	O
working	O
with	O
software	B-General_Concept
requirements	I-General_Concept
can	O
broadly	O
be	O
broken	O
down	O
into	O
elicitation	O
,	O
analysis	O
,	O
specification	O
,	O
and	O
management	O
.	O
</s>
<s>
Note	O
that	O
the	O
wording	O
Software	B-General_Concept
requirements	I-General_Concept
is	O
additionally	O
used	O
in	O
software	O
release	O
notes	O
to	O
explain	O
,	O
which	O
depending	O
software	O
packages	O
are	O
required	O
for	O
a	O
certain	O
software	O
to	O
be	O
built/installed/used	O
.	O
</s>
<s>
Use	B-Architecture
cases	I-Architecture
,	O
user	O
stories	O
,	O
functional	O
requirements	O
,	O
and	O
visual	O
analysis	O
models	O
are	O
popular	O
choices	O
for	O
requirements	O
specification	O
.	O
</s>
<s>
Taking	O
into	O
account	O
that	O
these	O
activities	O
may	O
involve	O
some	O
artifacts	O
such	O
as	O
observation	O
reports	O
(	O
user	O
observation	O
)	O
,	O
questionnaires	O
(	O
interviews	O
,	O
surveys	O
and	O
polls	O
)	O
,	O
use	B-Architecture
cases	I-Architecture
,	O
user	O
stories	O
;	O
activities	O
such	O
as	O
requirement	O
workshops	O
(	O
charrettes	O
)	O
,	O
brainstorming	O
,	O
mind	O
mapping	O
,	O
role-playing	O
;	O
and	O
even	O
,	O
prototyping	O
;	O
software	O
products	O
providing	O
some	O
or	O
all	O
of	O
these	O
capabilities	O
can	O
be	O
used	O
to	O
help	O
achieve	O
these	O
tasks	O
.	O
</s>
<s>
There	O
is	O
at	O
least	O
one	O
author	O
who	O
advocates	O
,	O
explicitly	O
,	O
for	O
mind	B-Protocol
mapping	I-Protocol
tools	I-Protocol
such	O
as	O
FreeMind	B-Language
;	O
and	O
,	O
alternatively	O
,	O
for	O
the	O
use	O
of	O
specification	O
by	O
example	O
tools	O
such	O
as	O
Concordion	B-Language
.	O
</s>
<s>
Additionally	O
,	O
the	O
ideas	O
and	O
statements	O
resulting	O
from	O
these	O
activities	O
may	O
be	O
gathered	O
and	O
organized	O
with	O
wikis	B-Protocol
and	O
other	O
collaboration	B-Protocol
tools	I-Protocol
such	O
as	O
Trello	B-Application
.	O
</s>
<s>
A	O
Software	B-General_Concept
requirements	I-General_Concept
specification	O
(	O
SRS	O
)	O
document	O
might	O
be	O
created	O
using	O
general-purpose	O
software	O
like	O
a	O
word	O
processor	O
or	O
one	O
of	O
several	O
specialized	O
tools	O
.	O
</s>
