Select a label case that's easier to read

The label case is important for readability. There are two common options to choose from:

• Sentence case: Each word starts with a lowercase letter except for proper nouns and the first word of a sentence. This works well for both long text and short phrases like headlines or labels. It's also easier to write and read, especially for lengthy content.
• Title case: The first letter of each major word is capitalized, while the rest are in lowercase. This gives more prominence to the text and can be suitable for UI elements such as alert titles, menu items, and labels, but may not be the best choice for long pieces of text.

Using all capital letters (ALL CAPS) for regular text is not a good idea because it's harder to read and adds visual clutter. While there are some specific cases where it's acceptable, like acronyms or design purposes, it's generally best to avoid using all caps for longer texts.