Canon Cat Reference Manual page 90

lcoPYl
When you copy results,
only
the
surface text
is
copied,
not
the hidden
pockets. However,
if
you copy
an
unpocketed
expression,
the copy
will
contain
a new
pocket.
The
expression
in
the
new pocket
will
be
the
same
as
the
old
one, unless the expression was
named.
If
the expression
was
named,
the copy
will
include
only the
name:
Avar:l+l
will
be
Avar in
the
copy.
This
means
that the
value of the
copied result
will
always match the
value
of
the original, even
ifthe
value
ofthe original
changes,
but
variables
will
be
defined
only in
the
original, not
in
the
copy.
IDOCUMENT LOCKI
When
a
document is
locked, you cannot
change the
text
in
it.
Thus
a
recalc
will
not affect the
contents
of
a locked
document.
As
soon as
you unlock the
document, the
calculations in it
will
participate in
the
nextrecalc and
their
results may
change.
Results in
a
locked document can
still
affect other parts
of
the
text.
For example,
if
Avar
is
defined
in
a locked document,
it
can
still be used in
expressions
in
unlocked documents.
IERASEI
To
erase
an expression,
highlight
all
characters
in
the
dotted underline and press
[ERASE].
After
a
recalc any
other expressions that used
variables that were
defined
in
the
erased
expression
or
that
referenced
it
by relative
addressing
will
produce
the
result ????.
Erasing the
first (leftmost)
character of the result erases
the
pocket. The next recalc converts the result to
plain text
without
a
dotted underline.
What
happens
when you
erase
an unpocketed expression
depends
on which part you erase:
If
you
erase
all of
the
result to the left of the decimal
point,
the dotted underscore
will
disappear
when you
do a
recalc, and the
unpocketed
expression
will
become
ordinary
text. If
you
erase
some
but not
all of
the result to the
left of
the decimal
point,
recalc
will
restore
the result
as
it
was
before you
erased
anything.
If
you
erase
part of
the result
to the
right of
the decimal
point,
even
including the
decimal point,
the
result
will
be
displayed
with that reduced
precision
after the
next recalc.
If
you
erase
any characters
in the unpocketed expression
between
the
first
and
second underscores,
a
subsequent
recalc
will
produce
a
result
reflecting your
changes
to
the
expression.
UNDO and Calculation
Calculation cannot be undone.