<s>
A	O
Help	B-Protocol
Authoring	I-Protocol
Tool	I-Protocol
or	O
HAT	O
is	O
a	O
software	O
program	O
used	O
by	O
technical	O
writers	O
to	O
create	O
online	B-Protocol
help	I-Protocol
systems	O
.	O
</s>
<s>
The	O
basic	O
functions	O
of	O
a	O
Help	B-Protocol
Authoring	I-Protocol
Tool	I-Protocol
(	O
HAT	O
)	O
can	O
be	O
divided	O
into	O
the	O
following	O
categories	O
:	O
</s>
<s>
Acceptable	O
file	O
formats	O
can	O
include	O
ASCII	B-Protocol
,	O
HTML	B-Language
,	O
OpenOffice	B-Application
Writer	I-Application
and	O
Microsoft	B-Application
Word	I-Application
,	O
and	O
compiled	O
Help	O
formats	O
such	O
as	O
Microsoft	O
WinHelp	O
and	O
Microsoft	B-Protocol
Compressed	I-Protocol
HTML	I-Protocol
Help	I-Protocol
.	O
</s>
<s>
The	O
output	O
from	O
a	O
HAT	O
can	O
be	O
either	O
a	O
compiled	O
Help	B-Protocol
file	I-Protocol
in	O
a	O
format	O
such	O
as	O
WinHelp	O
( *	O
.HLP	O
)	O
or	O
Microsoft	B-Protocol
Compiled	I-Protocol
HTML	I-Protocol
Help	I-Protocol
( *	O
.CHM	O
)	O
,	O
or	O
noncompiled	O
file	O
formats	O
such	O
as	O
Adobe	B-Application
PDF	I-Application
,	O
XML	B-Protocol
,	O
HTML	B-Language
or	O
JavaHelp	B-Protocol
.	O
</s>
<s>
Technical	O
writers	O
often	O
use	O
content	B-Protocol
management	I-Protocol
systems	I-Protocol
and	O
version	B-Architecture
control	I-Architecture
systems	I-Architecture
to	O
manage	O
their	O
work	O
.	O
</s>
