# Basic concepts

### Closing tag

The closing tag is the tag name wrapped by at least two selected chars that include a forward slash at the beginning. A simple example is `[/quote]`.

### Opening tag

The opening tag is the tag name wrapped by at least two selected chars. A simple example is `[quote]`.

### Replace tag

It's the action of replacing the single tag to a replace value in a specified text.

### Tag

As a **noun**, a label consists of **a name with opening and closing around**, where the opening is the **opening** character, and the last character is the **closing** character.

As a **verb**, to mark the specified text around with the opening and closing tag.

### Tag name

The name is a label without the opening and closing around.

### Tagged

A wrapper is a string object consisting of a [wrap](#wrap), which can wrap the specified text around.