# Disable indentation for one paragraph

I have written the following :

\par{first paragraph}
\par{second paragraph}
\par{third paragraph}


Now, I want to disable indentation for the third paragraph.
I naturally add \noindent command as following :

\par{first paragraph}
\par{second paragraph}
\noindent\par{third paragraph}


But it doesn't produce any effect.
Then, I found several ways to achieve that, but I still ask myself why \noindent is not working properly.

Thanks for sharing !

• Welcome to TeX SX! And with a simple \par\noindent Third paragraph? B.t.w., the \par command has no argument. – Bernard May 19 at 15:35
• You got it. \noindent\par doesn't work whereas \par\noindent works. – thoo-ma May 19 at 15:42
• @thoo-ma becase \par ends a paragraph (as a blank line do; you normally do not use explicit \par in a document, unless you have a clear reason to). So you should have first \par second \par \noindent third \par (no braces!) – Rmano May 19 at 17:09
• \par takes no argument and it ends a paragraph not start one. – Peter Wilson May 19 at 17:30
• you should almost never need \par or \noindent in a document, what is the use case here? certainly if you do use \par place it at the end of the paragraph, not the start. – David Carlisle May 19 at 22:13

## 1 Answer

First off, I strongly suggest you undo an apparent writing habit that has a worrisome cargo cult programming flavor, i.e., that you replace

\par{first paragraph}
\par{second paragraph}
\par{third paragraph}


with

first paragraph

second paragraph

third paragraph


Why? Mostly to reduce pointless code clutter, but also to acknowledge that (a) \par is a switch and does not take an argument and (b) TeX creates paragraph breaks automatically whenever it encounters one or more all-blank lines.

Second, to inhibit the paragraph indentation which happens if the parameter \parindent takes a positive length, all you need to do is to insert \noindent at the start of the paragraph, or paragraphs, in question.

Finally, it should be obvious why \noindent\par{third paragraph} doesn't produce the desired effect: \noindent` occurs at the end of the second paragraph and not at the start of the third paragraph. Hence, it can have no effect on the indentation of the first line of the third paragraph.