The dd and dt tags are for lists.
We usually use the <ul><li> tags, but the dd and dt tags are also quite good, especially when publishing programs, you can use it to type the list of function modules or other functions.
<dl></dl><dt>< /dt><dd>< /dd>
<dl></dl> is used to create a normal list, <dt></dt> is used to create the upper-level project in the list, <dd></dd> is used to create the lowest-level project in the list, and both <dt></dt> and <dd></dd> must be placed between the <dl></dl> flag pairs. Take a look at the example below and you will understand:
Create a normal list
<head>
<title>A normal list</title>
</head>
<body text=blue>
<dl>
<dt>Chinese Cities</dt>
<dd>Beijing</dd>
<dd>Shanghai</dd>
<dd>Guangzhou</dd>
<dt>American Cities</dt>
<dd>Washington</dd>
<dd>Chicago</dd>
<dd>New York</dd>
</dl>
</body>
</html>
This example is displayed in the browser as follows: Chinese cities
Beijing
Shanghai
Guangzhou
American cities
Washington
Chicago
New York