<s>
PlusCal	B-Application
(	O
formerly	O
called	O
+CAL	O
)	O
is	O
a	O
formal	O
specification	O
language	O
created	O
by	O
Leslie	O
Lamport	O
,	O
which	O
transpiles	B-Language
to	O
TLA+	B-Application
.	O
</s>
<s>
In	O
contrast	O
to	O
TLA+'s	O
action-oriented	B-Application
focus	O
on	O
distributed	B-Architecture
systems	I-Architecture
,	O
PlusCal	B-Application
most	O
resembles	O
an	O
imperative	B-Application
programming	I-Application
language	I-Application
and	O
is	O
better-suited	O
when	O
specifying	O
sequential	B-Algorithm
algorithms	I-Algorithm
.	O
</s>
<s>
PlusCal	B-Application
was	O
designed	O
to	O
replace	O
pseudocode	B-Language
,	O
retaining	O
its	O
simplicity	O
while	O
providing	O
a	O
formally-defined	O
and	O
verifiable	O
language	O
.	O
</s>
<s>
A	O
one-bit	O
clock	O
is	O
written	O
in	O
PlusCal	B-Application
as	O
follows	O
:	O
</s>
