Symbol Type Selector

Lets you choose from the following:
 Variables  Choose
from the available variables to use in the expression.
Note: The list
of available variables excludes any variables which cannot be used within the
expression because they contain expressions which directly or indirectly
reference the variable being assigned to.
 Functions  Choose
from the following Trigonometric, Arithmetic or Conversion functions to use in
the expression:

sin
sin(x): sine of x

acos
acos(x): arccosine of x

asin
asin(x): arcsine of x

atan
atan(x): arctangent of x

cos
cos(x): cosine of x

tan
tan(x): tangent of x

sqrt
sqrt(x): square root of x

limit
limit (x, min, max):
x, if x is less than max and greater than
min
min, if x is less than min
max, if x is greater than max

max
max(a, b, ..., t): maximum of 2 to 20
values

min
min(a, b, ..., t): minimum of 2 to 20 values

floor
floor(x): x rounded down to a nearest
integer

ceil
ceil(x): x rounded up to a nearest integer

log
log(x): natural logarithm of x

log10
log10(x): base10 logarithm of x

trunc
trunc(x): x with the decimal portion
truncated
Equivalent to floor(x) if x is greater than
zero
Equivalent to ceil(x) if x is less than
zero

round
round(x): rounds x to the nearest integer;
or
round(x,p): rounds x to the nearest value
with the number of decimal digits specified by p

odd
odd(x): true if x is an odd integer

sign
sign(x):
1 if x is greater than zero
1 if x is less than zero
0 if x is equal to zero

abs
abs(x): absolute value of x

int
int(x): converts x to an integer, truncating
any decimal portion and discarding any units

num
num(x): converts x to a number, discarding
any units

dist
dist(x): converts x to a distance in
working units

ang
ang(x): converts x to an angle in degrees

degrees
degrees(x): converts the value of x in
radians to an angle in degrees
 Constants  Choose
from the following constants to use in the expression:

true

false

PI  π

E
 SQRT2  Square
root of 2
 SQRT1_2  1
divided by the square root of 2
 LN2  Natural
logarithm of 2
 LN10  Natural
logarithm of 10
 LOG2E  Base2
logarithm of e
 LOG10E 
Base10 logarithm of e
Tip: To
insert the required variable, function, or constant, doubleclick on it.

Toolbar

Provides quick access to the following general
mathematical and boolean operations:
 Add (+)
 Subtract ()
 Multiply (*)
 Divide (/)
 Exponent (^)
 Modulo (%)
 Equal to (==)
 Not equal to (!=)
 Less than (<)
 Greater than (>)
 Less than equal to
(<=)
 Greater than equal
to (>=)
 And (&&)
 Or ( )
 Not (!)  Negates a
True or False value
 Conditional (?:)
 Group with
parentheses (( ))
 Distance
 A value enclosed in square
brackets parsed as a distance in working units.
 Angle
 A value enclosed in angle
brackets parsed as an angle according to angle readout settings.

Expression Field

Provides a text field where you build the expression
by entering and pulling the constituent elements (variables, functions, values,
operators, etc).

Test

Checks the validity of the expression and gives
comments for error/success in the field besides. You can also press
<Enter> to parse the expression.
