<s>
GuideML	B-Language
(	O
Guide	O
Markup	O
Language	O
)	O
is	O
a	O
document	O
markup	O
language	O
.	O
</s>
<s>
GuideML	B-Language
is	O
an	O
application	O
of	O
XML	B-Protocol
standards	O
.	O
</s>
<s>
It	O
mostly	O
consists	O
of	O
a	O
safe	O
subset	O
of	O
XHTML	B-Language
with	O
some	O
extra	O
tags	O
for	O
specific	O
features	O
of	O
the	O
software	O
.	O
</s>
<s>
The	O
aim	O
is	O
to	O
provide	O
something	O
which	O
resembles	O
HTML	O
but	O
is	O
simpler	O
to	O
learn	O
,	O
and	O
allows	O
basically	O
textual	O
content	O
to	O
be	O
formatted	O
in	O
a	O
skinnable	B-Application
way	O
.	O
</s>
<s>
Early	O
versions	O
of	O
the	O
h2g2	O
software	O
offered	O
full	O
HTML	O
markup	O
as	O
an	O
option	O
,	O
but	O
this	O
was	O
removed	O
for	O
security	O
reasons	O
;	O
thus	O
only	O
parts	O
of	O
HTML	O
which	O
are	O
considered	O
to	O
exist	O
in	O
GuideML	B-Language
can	O
now	O
be	O
used	O
,	O
with	O
things	O
such	O
as	O
JavaScript	B-Language
and	O
externally	O
hosted	O
images	O
being	O
removed	O
by	O
the	O
parser	O
.	O
</s>
