No-content Topics

If a topic has no content (Blank lines and blank spaces will be omitted) as well as subtopics, this topic will only be a folder not linking to any page.

For example:

This text makes Title 1 a No-content topic.

This is Title 1

{>}
This is Title 2
Here is the content of the topic 2.
Here is the content of the topic 2.

This is Title 3
Here is the content of the topic 3.
Here is the content of the topic 3.

{<}
This is Title 4
Here is the content of the topic 4.
Here is the content of the topic 4.

Description:

For CHM and Website format, output effect looks no difference from common topics, but if you click Title 1, there is no page to be shown.

For E-book and FAQ format, Title 1 has no link.