parskip latex. Now, the last line of an paragraph can use the full textwidth. parskip latex

 
 Now, the last line of an paragraph can use the full textwidthparskip latex  Here: documentclass{article} egin{document} setlengthparskip{12pt} Hello, par % Only here I need to skip the 12pt vertical space world! end{document} Is it possible?as the latex default is for paragraphs starting with an indent and no vertical space

If the value is positive, then LaTeX adds an invisible rule. Synopsis: setlength {parindent} { horizontal len } setlength {parskip} { vertical len } Both are rubber lengths (see Lengths ). Otherwise, you lose the indents. 14. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I'm working on fixing the first link. The default values are e@level@one@skip=0. The second half of this makebox[ extwidth]{sentence should be centered. When a regular paragraph follows a section heading, the vertical space between the heading and the first line of the paragraph is AFTERSKIP + parskip, where AFTERSKIP is a skip hard-coded in the document classes. This is a bit of a strange one, but I want to be able to base the values of parskip and parindent on the other (so I can change one and it will change both). In addition, it adjusts the space between list items. I'm defining the macro entativepar which inserts par and sets both parskip and parindent to 0pt. Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Add a Comment. 1. For instance, with. Also xaselineskip can be changed for x em or x pt. 31. Several authorshavebeeninvolvedtothistranslation. log file), you can also print the amount in your actual document output using hemedskipamount. Instead, use the parskip package: \usepackage{ parskip } This will also adjust the skips between list items. Enumitem package does not control it. To get a better version of parskip-like spacing, use a KOMA-Script document class with the parskip option. The default way for KOMA-Script classes is using the parskip option with a value like half, full, full- etc. The current font in the preamble is still ullfont, and 1em of ullfont is the same as zero. g. L a T e X (pronounced “LAY-tek” or “LAH-tek”) is a tool for typesetting professional-looking documents. g. To revert this try with. 1. You can also use hangindent and hangafter for a bit more control if you wish. Stack Exchange network consists of 183 Q&A communities including Stack Overflow,. So, for example, to add 0. PassOptionsToPackage{head height=27pt}{typearea}% removes the warning regarding the head height %--- your preamble without the unrelated stuff: documentclass[% %paper=a4,% default fontsize=10pt, parskip=half-,% do not change. 47 kB. 3 Change log Version 2. It is sufficient to load the package in the preamble. The tex file is compiled without any errors. 5 cm to the margins on either side, you would have:You may also set a length from the size of a text with one of these commands: The calc package provides also the function settototalheight{mylength} { some text } When using these commands, you may duplicate the text that you want to use as reference if you plan to also display it. It only takes a minute to sign up. By default, as far as I know, there is no spacing between paragraphs in Latex (I'm using Overleaf). For example, if I have a document parskip – Layout with zero \parindent, non-zero \parskip. 1 Your readers will hate you. Modified 10 years, 6 months ago. Using the titlesec package you can use itlespacing* you can change the spacing before and after the title; the syntax of the command is: itlespacing* {<command>} {<left>} {<before-sep>} {<after-sep>} (there's an additional optional argument, but it's not important here). One common style is to have no indents for paragraphs, but instead to have a ‘blank line’ between them. e. documentclass [12pt,a4paper] {article} usepackage {amsmath} usepackage {amsthm} usepackage {amssymb} I don't feel it's so good because the first paragraph has no indent but the second does. egin{document} Here's a paragraph with regular indentation. Advice from the parskip package: The parskip package advises that directly modifying parskip can “result in vertical spaces in unexpected places” (within a LaTeX document). As the bibliography is a (special) list environment, it shouldn't be affected by parskip - maybe its vertical spacing is accidentally about 0. In the second case the spacing if fixed at 1. you can use addvspaceigskipamount (or with braces around igskipamount if this is just a single token; it doesn't make any difference). . I know this is a matter of taste but I personally prefer the spacing between the paragraphs and my. – barbara beeton. Chapter 2: Basic structures Section 2. 1 Your readers will hate you. My actual purpose is to set line spacing 1. The stretchable glue in \parskip helps LaTeX in finding the best place for page breaks. Sorted by: 2. Don't copy bst, tex, pdf, dvi. Each command is associated with a length defined in the document class file. 1 Answer. 2. Simply changing \parskip and \parindent leaves a layout that is untidy; this package (though it is no substitute for a properly-designed class) helps alleviate this untidiness. Barbara's answer is correct; a change to parskip will be local within the quote environment. 5} the lines are not spreading as expected. The parskip package attempts to fix spacing issues that might arise from changes to the value of \parskip —such as within table of contents and list environments. In LaTeX, the parskip following a paragraph can be removed by appending a negative vertical space with the length of a parskip (vspace{-parskip}) to the end of it. flushright acts like this because it is defined as. 2. sty, rename it as myparskip. To ensure you have two paragraphs, you need a blank line between both. You add this space by loading the parskip package multiple times. And if you want to use any other size of spacing, you can use \\ []. Spacing between paragraph and list when using usepackage{parskip} and usepackage{enumitem} 2. What I wrote in my comment to your question still applies, and have a look at p. In the document body, don't use parskip but a blank line to separate. (and also sets the parindent to zero). TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. You can try the following codes before egin {document}: setlength {parskip} {xaselineskip}%set space between paragraphs. Put the following code in the preamble: makeatletter def hm@space@setup {% hm@preskip=parskip hm@postskip=0pt } makeatother. 1cm} where you want to change your margins. parskip – Layout with zero parindent, non-zero parskip. See the LaTeX manual or LaTeX Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Because parskip adds space everywhere, everywhere. 5em}% it would be better define distance in ex (5ex) % or in. TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. By default, as far as I know, there is no spacing between paragraphs in Latex (I'm using Overleaf). The package. The only workaround I found is using \\ instead of a paragraph, but that feels wrong. The stretchable glue in \parskip helps LATEX in finding the best place for page breaks. Remove the space between each paragraphs in Latex, 1 Answer. aselineskip: Normal vertical distance from the bottom of one line to the bottom of the next line in the same paragraph1 Answer. LaTeX 標準クラスの. documentclass {article} egin {document} egin {tabular} [t] {| p {100pt. 25} setlength {parskip} {0pt} setlength {parindent} {0pt} in the preamble of my document and most of the time the document looks like intended. When vspace is used within a paragraph, it inserts space after the current line. Like: I am a LaTeX user. \end {description} If you also want to indent the entire Example block you can use labelindent. e. By default, LaTeX does not leave any extra space between paragraphs, so parskip has a natural length of zero in. BTW, there's normally no need to add manual line breaks ( \\) in the text. latexnoob2022 Posts: 7. By default it produces the following paragraph layout: Zero. that is, 1em at 11pt: at least 1em of blank space is required at the end of paragraphs. \documentclass {article} \usepackage {lipsum} % filler text \begin {document} \the\bigskipamount % show value of \bigskipamount \the\parskip % show. I read that if one uses the parskip package then there is no need to add \par\bigskip to separate paragraphs; it is enough to move the new sentence to new line with Enter. 2. The default settings from apa6. 222k 46 571 917. Try adding aggedbottom to your preamble, and see if that changes anything. The basic problem is that parskip gets used all over the place. – Michael P1. Share. g. I've also tried using parskip{0pt}, and several other beamer options or parskip options, which are commented in the above latex-topmatter. For whatever reason, wrapping the itemize in a minipage will strike all the vertical spacing before and after it (including the mystical spacing that can't be removed by adjusting opsep, partopsep, and parskip ) screenshot. The following compilable example shows (a) that both \parskip and \bigskipamount are rubber lengths by default and (b) that adding two rubber lengths produces, sure enough, another rubber length. By the way, you may get the answer faster on TEX. 3cm. e. main. 7. You add this space by loading the parskip package multiple times. The way to set the default parskip may be the following: documentclass{beamer} %usetheme{CambridgeUS} usepackage[english]{babel} parskip=20pt egin{document} egin{frame} Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et. The first is good, the second is bad, the third is wrong. 2 Answers. Simply changing parskip and parindent leaves a layout that is untidy; this package (though it is no substitute for a properly-designed class) helps alleviate this untidiness. 5\baselineskip \advance\parskip by 0pt plus 2pt to \ifdim\parskip>0pt\relax \advance\parskip by 0pt plus 2pt \else \parskip=0. The parskip package attempts to fix spacing issues that might arise from changes to the value of parskip —such as within table of contents and list environments. Option 1: Add a non-breaking space between the line terminators: ~. cemtering doesn't although if you paragrphs have space (parskip) between them (as is default in letter) you may be. Now you are ready to copy the package files. I am trying to define a custom example environment for my thesis, but with my limited knowledge of LaTeX I am not able to figure this out from the amsthm documentation. The parskip package attempts to fix spacing issues that might arise from changes to the value of parskip —such as within table of contents and list environments. It works if I enclose my text inside egin {block} environment. setlengthparskip {0pt} in the same scope to suppress vertical skip. parskip On paragraphs in TeX/LaTeX 27. 2. 4em for both) thickness=hdimi defines the thickness of the bars (defaut value is 0. , part , chapter , section , subsection , subsubsection , paragraph or. In other words, apt-get install texlive would be a convenient way to install a trimmed down TeX Live distribution with all the recommended CTAN packages. You set it (with "rubber" values) using something like: setlength{parskip}{1cm plus4mm minus3mm} The defualt value of parskip is class dependent. For exactly one empty line between two paragraphs, use baselineskip: 1. Am I. The second half of this\\ \makebox[\textwidth]{sentence should be centered. The parskip package attempts to fix spacing issues that might arise from changes to the value of parskip —such as within table of contents and list environments. In section 3. Here, I take parskip. Although LaTeX provides a solution for that, it's better to load enumitem for even more flexibility. end {center} introduces additional spacing. 2. 6. From the documentation: Package to be used with any document class at any size. The parskip package attempts to fix spacing issues that might arise from changes to the value of \parskip —such as within table of contents and list environments. When I use setlength {parskip} {aselineskip} with linespread {1. Between every entry I wish to have the vertical spacing of one parskip like it is used in normal text (example: spacing between university and department). Q&A for work. As egreg mentioned in a comment, using {fseriessmall Some text here. 66 patchcmd tl@part@ii. (These values are set before LaTeX calls ormalfont so em is derived from the default font, Computer Modern. This answer and the name of the environment suggests it should keep its contents on the same page, however it doesn't, as this MWE demonstrates: documentclass {article} usepackage {lipsum} usepackage {parskip} egin {document} lipsum [4-8] egin {samepage} foo bar end {samepage} end {document} This breaks the page between. There's also this website that also has an online LaTeX editor; it includes working examples you can open. If you use the layoutaddtolengthsetlength. The paragraphs look like this: It is possible to set a spacing between paragraphs using. Thus your line is overfull. I use the package parskip, but want to suppress the parskip in some places, i. 4. (And it's only one more line of code!)The following article explains the most commonly used commands and illustrates them with examples. Then the problem with the vertical lines is much smaller, because they just overlap in most cases. The stretchable glue in parskip helps LATEX in finding the best place for page breaks. In all my text I have parskip working correctly, but it does not seem to work inside the table cell. LaTeX Basics. Package parskip works partially fine for me (it causes some unwanted . The spacing is. In the preamble you can still set \parskip by using "hard" lengths ( pt, mm,. To forcibly insert a space that is the same length as an indentation you can use the following: hspace {parindent} This can be useful if you start a new section with a framed theorem, etc. e. Nov 21, 2019 at 12:34. 13. The net effect is that entativepar will insert a paragraph break without any. That's true but at some locations I'm getting a very big skip although I just made a skip by moving the paragraph to a new line with the Enter button. I'm working on fixing the first link. \RedeclareSectionCommand [ beforeskip=<length or glue>, afterskip=<length or glue> ] {<heading level name. So will insert two new lines. 1. 7 in]{geometry} usepackage{parskip} makeatletter edefsvparskip{ heparskip} def@listI{parskip=svparskip elaxleftmarginleftmargini opsepz@ parsepparskip. 30. The shadebox environment typeset its content inside minipage, which by default has parskip=0pt inside of it (see Why is. 1 Answer. The parskip package attempts to fix spacing issues that might arise from changes to the value of parskip —such as within table of contents and list environments. <left> increases the left margin; <before-sep> controls the. Each has its own speciality and circumstances of usage, as we can find in these discussions ( A, B, C ). usepackage{parskip}(These values are set before LaTeX calls ormalfont so em is derived from the default font, Computer Modern. Check this. setlength {parskip} {1em} which looks like. If you want more. log file, just like showmedskip will print. Download the contents of this package in one zip archive (398. A negative vspace doesn't work, since parskip 's spacing can stretch. 49f (0. A negative vspace doesn't work, since parskip 's. You should probably use the parskip package rather than changing those values yourself. usepackage {caption} If you want to change all the captions in your document to a larger font with added linespacing, add the following line. This is what I used to get a compact list: usepackage {enumitem} setlist {topsep=0pt, leftmargin=*} Then use egin {itemize} as usual to start a list. The preamble I used is just. 0. Customizing spacing between paragraphs in Beamer plagues me constantly. In addition, it adjusts the space between list items. Highest score (default) Date modified (newest first) Date created (oldest first) You can coerce \baselineskip to be a <dimen> by multiplying it by 1 and then adding the stretch and shrink components: \setlength {\parskip} {1\baselineskip plus 2pt minus 1pt} or use \glueexpr: When writing documents in TeX/LaTeX, it is important to understand how the TeX engine “thinks”. the extra lines contain the spurious spaces you have added in the environment definition. 2k 7 172 265. 9 “I want my sub-floats to be ordered by column rather than by row, how do I do that. cls give you most of your requirements; the only thing that you might need to adjust is the spacing after the sections and subsections; those spaces are controlled by lengths (skips) e@level@one@skip (for sections) and e@level@two@skip (for subsections). ) instead of font-related ones ( em, ex) (but I wouldn't recommend it). Any piece of text in TeX/LaTeX is a paragraph and follows predefined specifications. I'm writing my own class using LaTeX, and just hit a bump with creating a ToC. It only takes a minute to sign up. 0 (2005/04/24) – first CTAN. Let's start with an example which typesets two centred paragraphs by writing them inside a center. Unfortunately, when I set it back to zero points, the lines in the two columns are no longer—necessarily—level. ii The Subfig Package 6. Formatting Information — An introduction to typesetting with LATEX. The last word slips into the second line, although there is still enough space in the first. 0. Firstly the "font size" is an essentially arbitrary number assigned by the font designer fontsize{10pt}{10pt}selectfont selects a font with nominal. Check this. 2 Answers. If a different spacing is required then %% the setstretch {baselinestretch} command can be used in the %% preamble to set the baselinestretch appropriately. Advice from the parskip package: The parskip package advises that directly modifying \parskip can “result in vertical spaces in unexpected places” (within a LaTeX document). Except when in label or after nobreak, parskip is added with addvspace, so that net. Sign up to join this community. The parskip package attempts to fix spacing issues that might arise from changes to the value of \parskip —such as within table of contents and list environments. 2 Answers. 2. @egreg, I quite like how it looks with both the indentation and paragraph skip. Automatic solution: Enable parskip, i. flushright adds some extra vertical spacing ( opsep, standard value 8pt plus 2pt minus 4t, but set to 0pt by the parskip package), but this on its own is not as dramitic as what you were seeing, unless the contents are overwide. Previous section. it's always prudent to insert par. LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related. Here, I take parskip. 1pt}: using indentation and a paragraph skip is bad style. Solved my problem! Within the LaTeX I had in my Jupyter notebook, I was using egin{align} and end{align} in order to have some equations I made line up nicely with their equal signs all stacked. I went to my digital hoard and found the techniques I used -- defining my own environments: %define the environment for compact enumeration ewenvironment{cenumerate}{setlength{parskip}{0pt} egin{enumerate}. 6 is a certain way to get poor typesetting. Viewed 12k times. You may or may not want to additionally set \parindent to zero. Share. Sorted by: 149. The book by Leslie Lamport, LaTeX: a document preparation system (1994) has a figure like the one you asked for on page 113, which explains, among other things, that the vertical space at the bottom of a list is always the same as the space at the top. Therefore, in addition to option parskip, the KOMA-Script classes provide their own interface with the command setparsizes to adjust the three choices of paragraph markup. This should be vspace {-3. g. The package can be used with any document class at any size. ) Go to Document --> Settings --> LaTeX preamble, and add. 1 Answer. LaTeX is supposed to be mostly logical markup. ltx is the compilation of many files, with comments removed. 1 Answer. Today I want to talk about two important packages in the LaTeX Math's world, amsmath and amssymb, these packages are very important if you want to create more advanced maths these provide you more math symbols which you can use,. Add a comment. 5ex but this can stretch or shrink a little if necessary for a best fit on the page. The source file for minipage is called ltboxes. aselineskip is a tex primitive, so it is always defined to be something (well unless someone goes letaselineskip@undefined but even then the underlying register still has a value even if it is not accessible. As noted by Ralf Stuber in the comments of this answer, indent: true should disable parskip. The resulting PDF displays the changes made to the margins but it doesn't display the Arial font. As the main feature, "[f]irst-line indentation is activated by adding a blank line before the quoting environment". ) instead of font-related ones ( em, ex) (but I wouldn't recommend it). You don't use the parskip package in memoir: it's listed among the ones that the class emulates (page xxix of the manual). I take it that the OP is not actually interested in why there is no ottomsep macro, but rather in how to achieve the spacing issue they face. Packaged on: 03/17/2021 21:11:14. But LaTeX also provides savebox to avoid this duplication. Possibly also setlength {parskip} {0pt plus 0. Setting the line-skip-limit to a more negative value resolved the issue. The parskip package attempts to fix spacing issues that might arise from changes to the value of \parskip —such as within table of contents and list environments. Teams. This is a really long sentence as an example. . Use parskip=full- or parskip=half- instead. Use. parfillskip is a TeX primitive controlling the amount of space on the final line of each paragraph. Not a trivial question: see this TeX. , also affecting spacing between items in itemize environment). However, this only affects the space after paragraph. The parskip package Frank Mittelbach March 14, 2021 Abstract The parskip package helps in implementing paragraph layouts where the paragraphs are separated by a vertical space instead of (or in addition to) indenting them. The main problem was the Large and large affecting the baseline skips. The subsection title in the following document should fit in a single line. The first option is setting parskip to be 1em, the indent option keeps the indent of the document class (if this option is not specified, the indent is set to zero) and the last option adjusts parfillskip. As Andrew says, you can use natbib and then reset ibsep: setlength {ibsep} {0pt plus 0. Follow. to your document preamble. I use the package parskip, but want to suppress the parskip in some places, i. The spacing between the lines becomes less. Example with a parskip of 2aselineskip: documentclass {scrartcl} setparsizes {0pt} {2aselineskip} {0pt plus 1fill} egin {document} section {Introduction}. Share. latex file in Pandoc's source code currently defines ightlist as: providecommand{ ightlist}{% setlength{itemsep}{0pt}setlength{parskip}{0pt}} This is also currently the case in the default LaTeX template, from the jgm/pandoc-templates project on Github. More detailed information, and further examples, can be found in the articles Text alignment and Paragraph formatting. 3. I have a two-column spread, one column on even pages and the corresponding other on the facing odd pages, using egin {paracol} [1]* {2} environments. Choose whatever space you need. If want to go for a ready made solution for controlling line spacing, packages like setspace come in quite handy (built-in. enumitem offers ready-made options for eliminating the space between items and paragraphs within the list (noitemsep) or all vertical spacing (nosep): documentclass[11pt]{article} usepackage{enumitem, kantlipsum} egin{document} paragraph{List without vertical spacing between items and paragraphs:} kant[2]. If you include this answer based on "#+ATTR_LATEX" between your #+END_SRC and #+RESULTS block, you should be able to resize the image through LaTeX export. The parskip package attempts to fix spacing issues that might arise from changes to the value of parskip —such as within table of contents and list environments. 5\baselineskip \advance\parskip by 0pt plus 2pt to \ifdim\parskip>0pt\relax \advance\parskip by 0pt plus 2pt \else \parskip=0. It will give an extra empty line between the two lines. parskip: Extra vertical space inserted between paragraphs. Advice from the parskip package: The parskip package advises that directly modifying parskip can “result in vertical spaces in unexpected places” (within a LaTeX document). This package also removes the indentation at the beginning of paragraphs, which usually is desired when you're adding space between the paragraphs. The parskip package patches things up to look reasonable. where x can be any value as you wish. intextsep : space left on top and bottom of an in-text float. The parskip package attempts to fix spacing issues that might arise from changes to the value of parskip —such as within table of contents and list environments. Once in a while though, especially when I use multiline-equations, I get huge spaces right before and after the. Thus, one can save the current parindent before loading the parskip package, and then reinstate that value of parindent. tex. Let's start with an example which typesets two centred paragraphs by writing them inside a center. It only. Remove all of them and load that package. if you want any help you should provide a full but minimal example that others can copy and test as is. The first paragraph start out without an indent. Similarly, the indentation of the first line of a new paragraph is controlled by the length parindent which, by default, is 20pt for the article and book classes. From the documentation: Package to be used with any document class at any size. 3. Regarding the two parallel lines, see the useful example in Drawing close together horizontal lines. will allow setting any line spacing. I used aggedbottomfor evading huge whitespace/glue in my text, but sometimes the space this adds is too much and the bottom lines of both columns are not aligned. For more information on the parskip package, see this Overleaf article: The parskip. (and also sets the parindent to zero). It. The tag should be used for question related to this function. I have tried the setlength {parskip} {0. makes sense, but unfortunately I. As others noted, that is really isn't how LaTeX is supposed to be used. Hence you can use setlength {headsep} {0cm} to change the space between the head rule and the text: % Options for packages loaded elsewhere PassOptionsToPackage {unicode} {hyperref}. Update: Based on the OP comments below, here are two possible solutions. In my case, I have both and I'm not able to change it with the setlength command. Creating your first LaTeX document; Choosing a LaTeX Compiler; Paragraphs and new lines; Bold, italics and underlining; Lists; Errors; Mathematics. fontsize {aaa} {bbb}selectfont. Im trying to format a twocolumn article document with some twocolumn spanning graphics, small tables etc. If you use a different font then to set \parindent to 1 em matching that font, put \AtBeginDocument{\setlength{\parindent}{1em}} in the preamble. It is slightly more comfortable to let the package parskip do that for you. This has the effect, that there will be an empty line between the section title and the section content, which I don't want. A new version, with redefinition moved to preamble. Learn more about TeamsEnclose the section in question within a group. 75} ormalsize ableofcontents enewcommand {aselinestretch} {1. If you want the current version, you would need to extract it from the dtx file or simply let your tex distribution install it. Sorted by: 3. So TeX is doing exactly what you told it to do: insert two new lines and end the paragraph, then start the new paragraph with an indent. 1 "Implementation desasters": The generic list environment is one of the central modules of the LaTeX implementation. So we locally set the \parskip to zero by default. However, if you want the new lines between the. The parskip package helps in implementing paragraph layouts where the paragraphs are separated by a vertical space instead of (or in addition to) indenting them. For "non floating listings" you can say lstset {belowskip=-parskip}. As an example on. Here, I take parskip. You can safely remove setlength {parindent} {0pt}, instead. 3c. The space between paragraphs is controlled by parskip, you can set that length to medskipamount (the length of medskip ). The writer. Try this example with and without the parskip package: \documentclass {report} %\usepackage {parskip} \usepackage {lipsum} \begin {document} \lipsum [2] \lipsum [2] \end {document} only loading the packages you actually need instead of just loading everything but the. Combinedly it will work for putting an extra blank line. Now I try with parskip, which works fine, but fails inside various environments (e. In the documentation of the implementation, the following formula for the spaces is given: <topskip> = opsep + partopsep + parskip <botskip> = opsep + partopsep. Advice from the parskip package: The parskip package advises that directly modifying parskip can “result in vertical spaces in unexpected places” (within a LaTeX document). I was largely able to remedy it by setting parskip to 0 and setting extfloatsep so that it couldn't. ) The default value for parskip in LaTeX’s standard document classes is 0pt plus1pt. I understand that standard a paragraph as an indent (except the first after a section) and that there is not space. If you want to redefine \parskip with revtex4-1, you have to do it after \begin {document}. 3. , between two paragraphs without changing parskip value like this: documentclass.