I am using a template for a conference and everything is OK, except for the "Keywords", This is strange, it didn't occur to me before. Usually I don't use a specific package for keywords. and the code is as: \begin{keywords} one, two, three, four \end{keywords}. However, at this time the error is like below:

LaTeX Error: Environment keywords undefined

I would be so glad if you help me with this problem. Mohammad.

  • How about \keywords{one, two, three, four}? – Werner Oct 10 '13 at 17:30
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    none of the standard article, report book classes define a keywords command or environment. The AMS classes such as amsart define a \keywords{...} command The class you are using doesn't define it. Do you think it should? Does the documentation for the conference say to use that syntax? – David Carlisle Oct 10 '13 at 17:35
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    What \documentclass are you using? – Werner Oct 10 '13 at 17:37
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    Should you maybe be using the elsarticle document class, which does provide an environment called keywords. – Mico Oct 10 '13 at 17:44
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    All this confusion would have been quickly cleared up if you had just provided a minimal example (or here). Providing such an example really makes life easier for everyone. – jon Oct 10 '13 at 18:25

Define your own \keywords macro:

enter image description here

\title{My title}
\author{My author}
\providecommand{\keywords}[1]{\textbf{\textit{Index terms---}} #1}
Lorem ipsum\ldots
\keywords{one, two, three, four}


I use \providecommand instead of \newcommand to accommodate the possibility that the document class you're using has defined \keywords already. \providecommand will only define it if not already defined.

  • Yeah, this one is also compiled successfully. Thank you so much. – Mohammad Tofigi Oct 10 '13 at 18:57
  • @MohammadTofigi: If this answered your question, consider accepting it as such. – Werner Oct 10 '13 at 18:59
  • @Werner- I tried to do it, but since my reputation score is only 4, its not accepting my "The answer is useful". I had an account here, but I couldn't recover it. How can I do the "accepting it as such"? – Mohammad Tofigi Oct 10 '13 at 19:04
  • @MohammadTofigi: You can click the tick mark (if you can't vote) which should mark this question as accepted (just below the vote buttons). Voting on posts requires a certain amount of reputation. If you have multiple accounts that you've lost access to one, you should contact the StackExchange staff who can merge them together for you. – Werner Oct 10 '13 at 19:13

One, two, three, four, five


my files from the logfile:

 *File List*
 article.cls    2007/10/19 v1.4h Standard LaTeX document class
  size10.clo    2007/10/19 v1.4h Standard LaTeX file (size option)
  ot1ptm.fd    2001/06/04 font definitions for OT1/ptm.
  • Nooo, in a paper, after abstract, there are keywords in this shape: "index terms- ...", but in your example, it appears inside the article. – Mohammad Tofigi Oct 10 '13 at 18:06
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    Again: then it is another document class! – user2478 Oct 10 '13 at 18:07
  • but in the template the class is article. you can find the templates in this link: icassp2014.org/PaperKit.html#Templates – Mohammad Tofigi Oct 10 '13 at 18:09
  • see my edited answer. You need the package spconf, available on that site – user2478 Oct 10 '13 at 18:22
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    Then you do not saved the file in a correct place. For a first try put spconf.sty in the same directory as the example doc – user2478 Oct 10 '13 at 18:28

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