How to control page directory

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When there are more than three titles in the article, MediaWiki will automatically generate a table of contents before the first title (this is the default setting).

If you need to hide the directory, you can add the "NOTOC" mark in the article; If you need to force the display of the directory regardless of the number of titles, you can add the "TOC" mark;

These two wiki tags do not limit where they appear, but they usually appear at the beginning or the end of an article and are in separate lines.