Kinds of fields

Each field holds one kind of value: text, a number, a choice from a list, yes or no, a date, a picture, or links to other content.

The kind decides what you can enter, so the tools can check it. Minutes takes only a number.

Try it: select the thumbnail, then look at each field's kind.

The thumbnail is a picture Ana uploaded. The lesson holds it in a field, like its title.