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     Chapter 20: A to Z Function and Instruction Reference
20ATOZ.DOC   TI-86, Chap 20, US English   Bob Fedorisko   Revised: 02/13/01 2:42 PM   Printed: 02/13/01 3:05 PM   Page 290 of 118
Else
‡ program editor
CTL menu
Refer to syntax information for 
If
, beginning on page 305. See
the 
If:Then:Else:End
 syntax.
End
‡ program editor
CTL menu
End
Identifies the end of a 
While
For
Repeat
, or 
If-Then-
Else
 loop.
Eng
† mode screen
Eng
Sets engineering notation mode, in which the power-of-
10 exponent is a multiple of 3.
In 
Eng
 notation mode:
123456789 b
123.456789
E
6
In 
Normal
 notation mode:
123456789 b
123456789
Eq
4
St(
STRNG menu
Eq
4
St(
equationVariable
,
stringVariable
)
Converts the contents of equationVariable to a string
and stores it to stringVariable. Be sure to specify an
equation variable, not an equation.
To create an equation variable, use an equal sign (=) to
define the variable. For example, enter 
A=B
¹
C
, not
B
¹
C
A
.
A=B¹C b
Done
5¶B b
5
2¶C b
2
A b
10
Eq
4St(A,STR) b
Done
STR b
B¹C        
Equal:
 = 
1
 
ã
=
 
ä
Refer to syntax information for 
Assignment
 on page 270.
If you use 
=
 in an expression in which the first argument
is not a variable name at the beginning of a line, the 
=
 is
treated as 
N
(.
Example of = treated as 
N(, where 4=6+1 is
evaluated as 4
N(6+1):
4=6+1 b
L
3
For true/false comparison, use == instead:
4==6+1 b
0