There are some replies that are used quite often. For example, the first reply to many questions is a demand for a minimal example. These replies should typically include a link with additional information. So I thought that it might be useful to collect some standard replies for quick copy&paste. This “question” is community wiki, so please feel free to add blocks and improve existing ones.
There is also a useful script solution on stackapps.com, see this answer by Martin Scharrer.
Useful Links
[TeX.SX starter guide](https://tex.meta.stackexchange.com/q/1436)
[minimal working example (MWE)](https://tex.meta.stackexchange.com/q/228)
[minimal working example with bibliography (MWEB)](https://tex.meta.stackexchange.com/q/4407)
[Follow-up questions](https://tex.meta.stackexchange.com/q/2117)
[How to Ask](https://tex.stackexchange.com/questions/how-to-ask)
[marked as a code sample](https://tex.meta.stackexchange.com/q/1192)
[mark your inline code](https://tex.meta.stackexchange.com/q/863)
[My question was closed as a duplicate, but I still need help. What can I do?](https://tex.meta.stackexchange.com/q/1015)
[How do you accept an answer?](https://tex.meta.stackexchange.com/q/1852)
[MathJaX Help Forums](https://groups.google.com/forum/#!forum/mathjax-users)
New users
Welcome
Welcome to TeX.SX! You can have a look at [our starter guide](https://tex.meta.stackexchange.com/q/1436) to familiarize yourself further with our format.
Minimal examples
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) Please help us help you and add a [minimal working example (MWE)](https://tex.meta.stackexchange.com/q/228) that illustrates your problem. Reproducing the problem and finding out what the issue is will be much easier when we see compilable code, starting with `\documentclass{...}` and ending with `\end{document}`.
In case the OP posted some code that isn't an MWE:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) Please make your code compilable (if possible), or at least complete it with `\documentclass{...}`, the required `\usepackage`'s, `\begin{document}`, and `\end{document}`. That may seem tedious to you, but think of the extra work it represents for TeX.SX users willing to give you a hand. Help them help you: remove that one hurdle between you and a solution to your problem.
- Alternative slightly less wordy version.
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) Please don't post code fragments. Instead, put your fragments into a complete compilable document that shows the problem.
- In case the OP posted a MWE that's not minimal:
Thank you for posting a working example! At the same time, much of your code does not seem to be relevant to the question you're asking here. Please limit the example to only the code required for your issue to appear. You can have a look at [this guide for how to prune your code](https://tex.meta.stackexchange.com/a/3225) for this purpose.
- More emphasis on why MWE should be a complete example
Unlike any other programming languages, it makes a lot of difference if you change the preamble of your document in terms of the output, such as clashing packages or page settings changed by some detail in the code and so on. That's why we need to have a complete example together with the relevant parts of your preamble included. Otherwise we might not be able to reproduce your problem.
Multiple, unrelated questions in one
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) You seem to be asking two [or more] unrelated questions, here. On TeX.SX, we try to keep unrelated questions on separate pages. If you have multiple questions that are unrelated to one another, you should ask each in a separate TeX.SX "question". You'll stand a better chance of getting a satisfactory answer to each of your questions.
Non-answers
Follow-up questions:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) Your question won't be seen by many people here, so it would be best to repost it as a fresh question. [Follow-up questions](https://tex.meta.stackexchange.com/q/2117) like this are more than welcome! Please use the "[Ask Question](//tex.stackexchange.com/questions/ask)" link for your new question; there you can link to this question to provide the background.
“Thank you” by user (≠ OP) rep < 15:
Instead of posting a “Thank you” as an additional answer, you should give feedback clicking the 'up' arrow you can see above each answer's score. Once you’ve gathered 15 reputation points on this site, you’ll be able to [upvote answers](//tex.stackexchange.com/privileges/vote-up) to contribute to this score. We want to keep the answer space reserved for actual answers, so this non-answer will be removed from public view soon.
“Thank you” by OP rep 15+:
Instead of posting a “Thank you” as an additional answer, you should thank [user] by upvoting [his/her] answer (with the upward pointing arrow to the left of it; you need 15 reputation points before you can upvote) and accepting it (by clicking on the checkmark ✓). We want to keep the answer space reserved for actual answers, so this non-answer will be removed from public view soon.
Thank you comments instead of upvote/accept
If you like my answer and it was helpful, please consider [upvoting](http://tex.stackexchange.com/privileges/vote-up) (by clicking on the arrows next to the score) and/or marking it as the [accepted answer](http://meta.tex.stackexchange.com/q/1852) (by clicking on the checkmark ✓).
Additional information:
Instead of “answering” your own question, you should comment on [user]'s answer or edit the original question to include the additional information.
And optionally:(You may have to register at tex.sx in order to do so.)
Answer edited into question
We'd like to keep answers separate from questions, so you should write a separate answer instead of editing your answer into the question. Self-answers are perfectly admissible, and a well-written answer may earn you additional reputation.
Migrated questions/answers/users
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) Your post was migrated here from another Stack Exchange site. Please register on this site, too, and make sure that both accounts are associated with each other (by using the same OpenID), otherwise you won't be able to comment on or accept answers or edit your question.
I want to do something very complicated: "Just do it for me"
[Welcome to TeX.SX!](//tex.meta.stackexchange.com/q/1436) On this site, a question should typically revolve around an abstract issue (e.g. "How do I get a double horizontal line in a table?") rather than a concrete application (e.g. "How do I make this table?"). Questions that look like "Please do this complicated thing for me" tend to get closed because they are either "off topic", "too broad", or "unclear". Please try to make your question clear and simple by giving a [minimal working example (MWE)](//tex.meta.stackexchange.com/q/228): you'll stand a greater chance of getting help.
Alternatively (too long to add the
Welcome to TeX.SX!
block, but this could be posted before as separate comment):Your question leaves all the effort to our community, even typing the essentials of a TeX document such as `\documentclass{}...\begin{document}` etc. As it is, most of our users will be very reluctant to touch your question, and you are left to the mercy of our procrastination team who are very few in number and very picky about selecting questions. You can improve your question by adding a [minimal working example (MWE)](https://tex.meta.stackexchange.com/q/228) that more users can copy/paste onto their systems to work on. If no hero takes the challenge we might have to close your question.
Minimal effort / homework questions
Hi [user] and [welcome to TeX.SX](https://tex.meta.stackexchange.com/q/1436). In its current form, your question might not receive many answers. Please take a look at the [How to Ask](//tex.stackexchange.com/questions/how-to-ask)-page and try to improve your question according to the guidance found there. This may require you to show some effort on your part in terms of attempting a solution. If you have questions about what to do or if you don't quite understand what this means, please ask for clarification using the `add comment` function.
"Just do it for me" graphics questions
[Welcome to TeX.SX!](//tex.meta.stackexchange.com/q/1436) Questions about how to draw specific graphics that just post an image of the desired result are really not reasonable questions to ask on the site. Please post a minimal compilable document showing that you've tried to produce the image and then people will be happy to help you with any specific problems you may have. See [minimal working example (MWE)](//tex.meta.stackexchange.com/q/228) for what needs to go into such a document.
Marking code
Code blocks:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) A tip: If you indent lines by 4 spaces, they'll be [marked as a code sample](https://tex.meta.stackexchange.com/q/1192). You can also highlight the code and click the "code" button (with "{}" on it).
Inline code:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) A tip: You can use backticks `\`` to [mark your inline code](https://tex.meta.stackexchange.com/q/863) as I did in my edit.
Code blocks and inline code:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) A tip: If you [indent lines by 4 spaces](https://tex.meta.stackexchange.com/q/1192) or [enclose words in backticks `\``](https://tex.meta.stackexchange.com/q/863), they'll be marked as code, as can be seen in my edit. You can also highlight the code and click the "code" button (with "{}" on it).
Intro / closing
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) You don't have to sign with your name since [it automatically appears in the lower right corner](//tex.stackexchange.com/faq#signatures) of your post.
Alternatively:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) It's not necessary to sign your questions (as [there is already a box with your username below it](//tex.stackexchange.com/faq#signatures)) or to begin them with a greeting.
Alternatively:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) Usually, we don't put a greeting or a “thank you” in our posts. While this might seem strange at first, it is not a sign of lack of politeness, but rather part of our trying to keep everything very concise. [Accepting and upvoting answers is the preferred way here](//tex.stackexchange.com/about) to say “thank you” to users who helped you.
And optionally for all:
A suggestion: Do us a favor and change your username to something more telling than "user1234".
Merging accounts
It looks like you've got two separate accounts, which means you cannot edit your original post or leave comments. The Stack Exchange staff can [merge them together for you](//tex.stackexchange.com/help/user-merge).
Questions solved by updating
This behavior is due to a bug in `<name-of-package>` which is fixed in the `<date/version>` release. Where possible, you should [update your TeX distribution](//tex.stackexchange.com/q/55437) to install the current release. If this is not possible, for example if you want to change only this one package or where you do not have the privileges to update the entire distribution, you will need to [install the package locally](//tex.stackexchange.com/q/1137). This option should be considered a last resort, since for more complex packages there may be package dependencies that will make local installation more complicated and error-prone.
Possible duplicates
See discussion in Closing questions as exact duplications: 'best practice' for notes on these messages!
For new(ish) users whose question looks like it might get closed as a duplicate:
[Welcome to TeX.SX!](https://tex.meta.stackexchange.com/q/1436) This question is very similar to [link]. Please take a look at it as the information there might help you. If so, that's great, and we'll probably close this question as a duplicate just to keep the place tidy and to help people find answers quickly. If not, please edit your question here to explain why so that people can better focus their attention to help you.
On casting first dupe vote on a question where the OP has not said 'Oh yes, it's a dupe':
I've voted to close this as a duplicate because currently, the question looks very similar to [link]. Note that closing a question is not final. If you feel that this question is not a duplicate you can edit it to add more information, in which case it may be reopened.
For questions that are likely to be closed
If your question is closed and you still need help, don't worry, [here you'll find help on what to do next](https://tex.meta.stackexchange.com/q/1015).
Alternatively, for already closed questions:
If the linked question doesn't solve your problem, please edit your question to explain why and we'll reopen it. Closing as a duplicate is just a way of ensuring that people who find this question easily find the other one.
MathJax questions:
While [tag:MathJax] uses LaTeX syntax, it uses JavaScript and HTML's DOM model rather than TeX technology, making it mostly off topic for this site. You might try instead searching among the [questions tagged with mathjax on Stack Overflow](//stackoverflow.com/questions/tagged/mathjax), or in the official [mathjax-users](https://groups.google.com/d/forum/mathjax-users) Google group.
Please ‘accept’ an answer below
One should wait a day before leaving this comment:
Since you have some responses below that seem to answer your question, please consider marking one of them as ‘Accepted’ by clicking on the tickmark below their vote count (see [How do you accept an answer?](https://tex.meta.stackexchange.com/q/1852)). This shows which answer helped you most, and it assigns reputation points to the author of the answer (and to you!). It's part of [this site's idea to identify good questions and answers through upvotes and acceptance of answers](//tex.stackexchange.com/about).
Note that in case of a self-answer one has to wait 48 hours (after the question was posted) before accepting.
How to look up a symbol
Have a look at [“How to look up a symbol?”](//tex.stackexchange.com/questions/14) for ideas how you can easily find a particular symbol.
Do not use Debian packages (For the future, as for now it has TL 2012)
Debian (except unstable) and Ubuntu still contain TeX Live 2012. Many packages have been significantly improved since then. I would recommend installing TeX Live directly from [TUG](//tug.org/texlive/) instead of using the Debian packages. That way you can always get current package versions by running `sudo tlmgr update --all`.
Upload images only over the official interface
Please make sure that all images are uploaded using the official Stack Exchange interface, i.e. the image icon on top of the text field (shortcut: Ctrl+G). This ensures that all images will always be accessible and won't expire.
As new user without image posting privileges simply include the image as normal and remove the `!` in front of it to turn it into a link. A moderator or another user with edit privileges can then reinsert the `!` to turn it into an image again.
Reminder for being clement
Please don't downvote below a score of -1, even if the question in its current form needs some improvement. A score of -1 is enough to show that the question needs work, anything below that is of no use. Also, if you downvote or vote to close, please leave a comment explaining why you did so, but wait at least 24 hours after asking the OP for improvements to the question before voting to close.
Optional addition:
Don't forget, it's a new user!
This should not have been closed. Please wait at least 24 hours after asking the OP for improvements to the question before voting to close. Also, if you downvote, please don't forget to revert the vote after the question is improved.
Enhanced version:
This should not have been closed: The question has been improved significantly from its first version. Please wait at least 24 hours after asking the OP for improvements to the question before voting to close. Also, if you downvote, please don't forget to revert the vote after the question is improved.
Packages for creating MWEs
(The [lipsum](//ctan.org/pkg/lipsum) package is only used to add some dummy text to the example.)
(The [blindtext](//ctan.org/pkg/blindtext) package is only used to add some dummy text to the example.)
(The [kantlipsum](//ctan.org/pkg/kantlipsum) package is only used to add some dummy text to the example.)
(The filecontents environment is only used to include some external files directly into the example, so that it compiles. It is not necessary for the solution.)
For moderators
Just a note to confirm _X_'s comment, this ought to be reposted as a question for you to get the best chance of it being answered. Also, it's a little confusing to have fresh questions in the _answers_ section, so this answer will be removed from public view in _N_ days.
Reasons for close voting
This site encourages [specific questions](https://tex.stackexchange.com/help/how-to-ask) accompanied by a [minimal working example (MWE)](https://tex.meta.stackexchange.com/q/228). Questions in the format of »What do you recommend?« are off-topic as they tend to attract opinionated answers and spam. I'm therefore voting to close.
Do you want TikZ with that?
:-)
) In some cases it might be OK earlier that a day, but for now I'll change it above.