To Define Customized Server-parsed Tag

1. Defining the Functions that Implement a Tag.

   You must define the tag execution function. You must also define other functions that are called on tag loading and unloading and on page loading and unloading.

2. Registering a New Tag.

   Write an initialization function that registers the tag using the shtml_add_tag function.

3. Loading a New Tag Into the Server.

   These actions are described in the sections that follow.