Programming Summary and Index 279
− Back arrow. In
Program mode, deletes
displayed instruction
from program memory.
All subsequent
instructions are moved up
(page 83).
b Label. Used with
the label designations
below to denote the
start of a program
routine (page 67).
A B C Á E
0 1 2 3 4 5 6 7 8 9 .0
.1 .2 .3 .4 .5 .6 .7 .8 .9
Label designations.
When preceded by b,
define the beginning of a
program routine (page
67). Also used (without
b) to initiate
execution of a specific
routine
(page 69).
U Activates and
deactivates User mode,
which exchanges the
primary (white) and gold
alternate functions (A
through E) of the top
left five functions (page
69). User mode also
affects the matrix use of
O or l {A
through E, %} User
mode automatically
increments R
0
(row
number) or R
1
(column
number) for storage or
recall of matrix
elements (page 144).
t Go to. Used with a
label designator (listed
above) or V to transfer
the position of the
calculator to the
designated label. If it is a
program instruction,
program execution
continues. If it is not a
program instruction,
only the position change
occurs (page 90). If a
negative number is
stored in R
I
, t V
will effect a transfer to a
line number (page 109).
t ” nnn Go to
line number. Positions
calculator to the existing
line number specified by
nnn. Not programmable
(page 82).
G Go to subroutine.
Used with a label
designator (listed above)
or start the execution of
a given, labeled routine.
Can be used both in a
program and from the
keyboard (in Run mode).
A n instruction
transfers execution back
to the first line following
the G (page 101).
‚ Back step. Moves
calculator back one or
more lines in program
memory. (Also scrolls in
Program mode.)
Displays line number
and contents of previous
program line (page 83).
 Single step. In
Program mode: moves
calculator forward one
or more lines in program
memory. In Run mode:
displays and executes
the current program
line, then steps to next
line to be executed
(page 82).
© Pause. Halts
program execution for
about 1 second to
display contents of X-
register, then resumes
execution (page 68).
¦ Run/Stop. Begins
program execution from
current line number in
program memory. Stops
execution if program is
running (page 68).
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