1--- 2layout: "language" 3page_title: "lower - Functions - Configuration Language" 4sidebar_current: "docs-funcs-string-lower" 5description: |- 6 The lower function converts all cased letters in the given string to lowercase. 7--- 8 9# `lower` Function 10 11`lower` converts all cased letters in the given string to lowercase. 12 13## Examples 14 15``` 16> lower("HELLO") 17hello 18> lower("АЛЛО!") 19алло! 20``` 21 22This function uses Unicode's definition of letters and of upper- and lowercase. 23 24## Related Functions 25 26* [`upper`](./upper.html) converts letters in a string to _uppercase_. 27* [`title`](./title.html) converts the first letter of each word in a string to uppercase. 28