# Should \paragraph be used only under \subsubsection?

Very simple question:

Is \paragraph supposed to be used only under \subsubsection or do you use it directly under \section or \subsection as well (e.g., if there are no further sub sections necessary).

I mean, because you wouldn't use \subsubsection directly under \chapter ...

-
–  brita_ Jan 28 at 10:45

Although not much bad happens in most cases if you break the rules, you should use \paragraph below \subsubsection. Despite its rather unfortunate name \paragraph and \subparagraph are part of the section level hierarchy and unrelated to paragraphs of text.

LaTeX is designed so that you can mark up sectional units and decide separately what level of sectioning is reflected in the table of contents, and what level is numbered.

If you set the counters secnumdepth or tocdepth above 4 then you will bring in the paragraph level and the omitted subsubsection level 3 will be more obvious.

-
Somehow I used \paragraph more because of the nice formatting :) I found the description environment as replacement. –  user999007 Feb 6 '13 at 21:42
You can redefine \subsubsection to use the same formatting as \paragraph (it's only a line of code in the standard classes) –  David Carlisle Feb 6 '13 at 22:10

I frequently use a structure consisting of \chapter, \section, \subsection, and \paragraph.

The only real constraint, I think, is that without special adjustments you can only number the structure above the point where you "break the hierarchy".

But then applications where you number down to 5 levels (or 6 if you add \subparagraph) are, I think, very specialised and somewhat unusual.