Boolean

bool(): //todo
boolean(anything): converts a value to it's boolean value
contains(string, substring): returns true if a string contains a substring
endsWith(string, substring): returns true if a string ends with a substring
eq(value1, value2): returns true if two values are equal
ge(value1, value2): returns true if value1 >= value2
gt(value1, value2): returns true if value1 > value2
isBetween(value, startValue, endValue): returns true if value >= startValue and value <= endValue
isEmpty(value): returns true if the value is empty
le(value1, value2): returns true if value1 <= value2
lt(value1, value2): returns true if value1 < value2
not(value): returns the negative boolean value
startsWith(string, substring): returns true if a string starts with a substring

Date

avg(values): calculates the average of a series of numeric values
ceil(): //todo
ceiling(decimal or string): converts a decimal value to it's closest higher integer value
celsius(temperature): converts temperature from Fahrenheit to Celsius
decimal(integer or string): converts an integer value to it's decimal value
dewPoint(temperature, relativeHumidity[, scale]): returns the calculated dew point temperature
fahrenheit([Sensor;temperature]): converts temperature from Celsius to Fahrenheit
float(): //todo
floor(decimal or string): converts a decimal value to it's closest lower integer value
max(values): calculates the maximum of a series of numeric values
median(values): returns the value in the middle of a sorted array
min(values): calculates the minimum of a series of numeric values
number(): //todo
power(integer or decimal or string, power): converts a decimal value to it's power decimal value
round(decimal or string, [precision]): converts a decimal value to it's rounded value
sqr(integer or decimal or string): converts a decimal value to it's square decimal value
sqrt(integer or decimal or string): converts a decimal value to it's square root decimal value
stdev(values): calculates the standard deviation of a series of numeric values
sum(values): calculates the sum of a series of numeric values
variance(values): calculates the standard deviation of a series of numeric values

if(condition, valueIfTrue, valueIfFalse): evaluates a boolean and returns value1 if true, or value2 otherwise
least(values): returns the value that is least found a series of numeric values
most(values): returns the value that is most found a series of numeric values
previousValue([device;attribute]): returns the previous value of the attribute

age([device;attribute]): returns the number of milliseconds an attribute had the current value
count(values): calculates the number of true/non-zero/non-empty items in a series of numeric values
int(): //todo
integer(decimal or string): converts a decimal value to it's integer value
newer([device;attribute],[...], [device;attribute], threshold): returns the number of devices whose attribute had the current value for less than the specified number of milliseconds
older([device;attribute],[...], [device;attribute], threshold): returns the number of devices whose attribute had the current value for more than the specified number of milliseconds
previousAge([device;attribute]): returns the number of milliseconds an attribute had the previous value

replace(string, search, replace[, [..], search, replace]): replaces a search text inside of a value
right(string, count): returns a substring of a value
sprintf(format, arguments): formats a series of values into a string
string(anything): converts a value to it's string value
substring(string, start, count): returns a substring of a value
text(): //todo
title(string): returns a title case value of a string
upper(string): returns an upper case value of a string

time(value): returns the value as a time type
addSeconds(dateTime, seconds): adds seconds to time, returns the value as a time type
addMinutes(dateTime, minutes): adds minutes to time, returns the value as a time type
addHours(dateTime, hours): adds hours to time, returns the value as a time type
addDays(dateTime, days): adds days to time, returns the value as a time type
addWeeks(dateTime, weeks): adds weeks to time, returns the value as a time type