Boltek Lightning/2000 - Manual (Page 72)

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or or or or a logical or of two expressions
xor xor xor xor a logical exclusive or of two expressions
+ the sum of two expressions or the concatenation of
two quoted strings
- the difference of two expressions
* the multiplication of two expressions
/ the division of two expressions
div div div div the division of two expressions, truncated to a whole
number
Here are a few examples of valid if statements:
if if if if @StrokeCount( 5 ) > 1000 then then then then
#AlertStatusLineYellow
endif
endif endif endif
if
if if if ( @CGFlashCount > 50 ) and and and and ( @StrokeCount > 1000 )
then then then then
#AlertStatusLineYellow
if
if if if @CloseStormCount > 0 then then then then
#Sound( ‘beep5’ )
#WriteLine( ‘A storm is nearby.’ )
endif
endif endif endif
endif endif endif endif
if
if if if @HardwareType = 0 then then then then
#WriteLine( ‘No lightning detector is installed.’ )
elseif
elseif elseif elseif @HardwareType = 1 then then then then
#WriteLine( ‘LD-250 installed’ )
elseif @HardwareType = 4 then
#WriteLine( ‘LD-350 installed’ )
else
else else else
#WriteLine( ‘StormTracker installed’ )
endif
endif endif endif
When using “and” in an expression, the part after the “and” is
evaluated only if the part before the “and” is true. This is
because the entire expression (before and after) can be true
only if the before part is true and the after part is true. If the
before part is false, then the entire expression is false whether
or not the after part is true. Since it does not matter in this
case if the after part is true or false, there is no sense in
wasting time evaluating the after part.