<s>
Posh	O
is	O
a	O
software	B-Architecture
framework	I-Architecture
used	O
in	O
cross-platform	B-Operating_System
software	I-Operating_System
development	B-General_Concept
.	O
</s>
<s>
The	O
Posh	O
software	B-Architecture
framework	I-Architecture
provides	O
a	O
header	B-Language
file	I-Language
and	O
an	O
optional	O
C	B-Language
source	O
file	O
.	O
</s>
<s>
Posh	O
does	O
not	O
provide	O
alternatives	O
where	O
a	O
host	O
platform	B-Device
does	O
not	O
offer	O
a	O
feature	O
,	O
but	O
informs	O
through	O
preprocessor	B-Language
macros	O
what	O
is	O
supported	O
and	O
what	O
is	O
not	O
.	O
</s>
<s>
It	O
sets	O
macros	O
to	O
assist	O
in	O
compiling	B-Language
with	O
various	O
compilers	B-Language
(	O
such	O
as	O
GCC	B-Application
,	O
MSVC	B-Application
and	O
OpenWatcom	B-Application
)	O
,	O
and	O
different	O
host	O
endiannesses	O
.	O
</s>
<s>
In	O
its	O
simplest	O
form	O
,	O
only	O
a	O
single	O
header	B-Language
file	I-Language
is	O
required	O
.	O
</s>
<s>
In	O
the	O
optional	O
C	B-Language
source	O
file	O
,	O
there	O
are	O
functions	O
for	O
byte	O
swapping	O
and	O
in-memory	O
serialisation/deserialisation	B-Application
.	O
</s>
