<s>
iCalamus	B-Operating_System
is	O
a	O
frame-oriented	O
layout	O
and	O
DTP	O
application	O
for	O
macOS	B-Application
which	O
has	O
been	O
developed	O
by	O
the	O
German	O
software	O
company	O
invers	O
Software	O
.	O
</s>
<s>
The	O
name	O
iCalamus	B-Operating_System
derives	O
from	O
the	O
software	O
Calamus	B-Device
by	O
the	O
same	O
manufacturer	O
but	O
neither	O
offers	O
document	O
compatibility	O
nor	O
shares	O
a	O
single	O
line	O
of	O
source	O
code	O
with	O
the	O
latter	O
.	O
</s>
<s>
(	O
Calamus	B-Device
derives	O
from	O
the	O
Latin	O
name	O
of	O
a	O
writing	O
instrument	O
made	O
of	O
reeds	O
;	O
see	O
Kalamos	O
.	O
)	O
</s>
<s>
In	O
April	O
2018	O
iCalamus	B-Operating_System
was	O
acquired	O
by	O
Lemke	O
Software	O
,	O
makers	O
of	O
GraphicConverter	B-Operating_System
.	O
</s>
<s>
After	O
invers	O
Software	O
had	O
marketed	O
and	O
maintained	O
the	O
DTP	O
software	O
Calamus	B-Device
for	O
various	O
computer	O
platforms	O
since	O
1996	O
,	O
at	O
latest	O
in	O
2001	O
,	O
after	O
the	O
takeover	O
of	O
the	O
Calamus	B-Device
program	O
rights	O
,	O
the	O
question	O
came	O
up	O
whether	O
Calamus	B-Device
should	O
still	O
be	O
maintained	O
as	O
a	O
native	O
Atari	O
application	O
or	O
better	O
be	O
ported	O
to	O
Windows	O
or	O
Mac	B-Application
OS	I-Application
.	O
</s>
<s>
There	O
was	O
the	O
idea	O
of	O
a	O
whole	O
new	O
layout	O
application	O
natively	O
to	O
write	O
in	O
Objective-C	B-Language
for	O
Mac	B-Application
OS	I-Application
X	I-Application
.	O
</s>
<s>
The	O
development	O
of	O
iCalamus	B-Operating_System
1.0	O
started	O
in	O
November	O
2003	O
and	O
was	O
completed	O
with	O
some	O
delay	O
in	O
October	O
2006	O
.	O
</s>
<s>
iCalamus	B-Operating_System
is	O
often	O
compared	O
with	O
InDesign	B-Operating_System
,	O
PageMaker	B-Operating_System
and	O
QuarkXPress	B-Operating_System
in	O
magazine	O
reviews	O
.	O
</s>
<s>
Because	O
of	O
the	O
similar	O
name	O
,	O
it	O
is	O
often	O
regarded	O
as	O
the	O
new	O
Calamus	B-Device
for	O
Mac	O
.	O
</s>
<s>
In	O
March	O
2018	O
,	O
invers	O
Software	O
announced	O
the	O
cessation	O
of	O
its	O
business	O
operations	O
and	O
hence	O
the	O
distribution	O
and	O
development	O
of	O
iCalamus	B-Operating_System
.	O
</s>
<s>
In	O
May	O
2018	O
it	O
was	O
announced	O
that	O
the	O
GraphicConverter	B-Operating_System
manufacturer	O
Lemke	O
Software	O
took	O
over	O
iCalamus	B-Operating_System
.	O
</s>
<s>
Since	O
then	O
,	O
Lemke	O
Software	O
has	O
been	O
distributing	O
iCalamus	B-Operating_System
on	O
its	O
own	O
—	O
and	O
will	O
further	O
develop	O
the	O
program	O
.	O
</s>
<s>
Thanks	O
to	O
a	O
special	O
plug-in	O
which	O
handles	O
print	O
orders	O
for	O
photo	O
books	O
,	O
calendars	O
and	O
other	O
print	O
products	O
of	O
the	O
Photographerbook	O
company	O
,	O
it	O
is	O
also	O
possible	O
to	O
print	O
photo	O
books	O
and	O
calendars	O
created	O
in	O
iPhoto	B-Operating_System
with	O
the	O
free	O
,	O
unregistered	O
version	O
of	O
iCalamus	B-Operating_System
.	O
</s>
<s>
Standard	O
iCalamus	B-Operating_System
documents	O
can	O
be	O
created	O
with	O
some	O
limitations	O
in	O
the	O
unregistered	O
version	O
.	O
</s>
<s>
Being	O
a	O
Universal	B-Operating_System
Binary	I-Operating_System
,	O
iCalamus	B-Operating_System
1	O
supported	O
Mac	B-Application
OS	I-Application
X	I-Application
as	O
of	O
10.4.5	O
.	O
</s>
<s>
Version	O
2	O
was	O
released	O
at	O
the	O
end	O
of	O
2013	O
,	O
requires	O
(	O
since	O
v2.14	O
)	O
OS	B-Operating_System
X	I-Operating_System
10.11	I-Operating_System
(	O
El	O
Capitan	O
)	O
and	O
is	O
a	O
64	O
bit	O
application	O
.	O
</s>
<s>
There	O
is	O
still	O
no	O
option	O
to	O
load	O
Calamus	B-Device
SL	I-Device
documents	O
directly	O
into	O
iCalamus	B-Operating_System
.	O
</s>
<s>
iCalamus	B-Operating_System
can	O
take	O
whole	O
web	O
pages	O
as	O
PDF	B-Application
screen	O
shots	O
into	O
documents	O
.	O
</s>
<s>
Like	O
his	O
namesake	O
Calamus	B-Device
,	O
iCalamus	B-Operating_System
supports	O
real	O
virtual	O
copies	O
of	O
frames	O
,	O
where	O
there	O
is	O
no	O
mother-child	O
relation	O
;	O
all	O
virtual	O
frames	O
change	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
iCalamus	B-Operating_System
supports	O
all	O
PDF	B-Application
blend	O
modes	O
.	O
</s>
<s>
iCalamus	B-Operating_System
is	O
the	O
first	O
DTP	O
application	O
to	O
support	O
the	O
LinkBack	B-Application
protocol	O
which	O
allows	O
to	O
plug	O
external	O
applications	O
like	O
plug-ins	O
or	O
modules	O
into	O
the	O
GUI	B-Application
of	O
the	O
software	O
.	O
</s>
