What does the Capitalize function do?

The Capitalize function is designed to transform the input string by capitalizing the first letter of each word in that string. This means that if you have a sentence or a phrase, the function will ensure that every word begins with an uppercase letter while keeping the rest of the letters in lowercase. This is particularly useful when formatting text for output, such as titles or headings, where proper noun capitalization is desired.

For example, if the input is "welcome to qlik sense", using the Capitalize function would yield "Welcome To Qlik Sense". In contexts where consistent and standard text presentation is important, such as reporting or data visualization, this function proves to be very valuable.

The other options describe different functionalities that are unrelated to what the Capitalize function actually does. For instance, converting to lower case, replacing strings, or repeating strings serve different purposes and would not provide the word-capitalizing effect inherent to the Capitalize function.