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OS: Windows 7 + SP1
TeX: MiKTeX 2.9
IDE: Kile 2.1

For getting help on usage of package options, I usually Google "foo options latex", where foo is the name of the package. I wanted to know whether the documentation is available on the host machine where my LaTeX is installed. I can see all the packages I am using in the MiKTeX package manager. But in the package manager I am not able to locate the help files associated with the packages (if at all they are present on my computer).

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texdoc is your friend: texdoc <packagename> should open a web browser with links to the search results – cmhughes May 16 '12 at 3:04
Where should I type "texdoc <packagename>"? Do you think command prompt is alright? – Shashank Sawant May 16 '12 at 3:23
Yeah, tried it straight in windows command prompt. Took me directly to the relevant website. – Shashank Sawant May 16 '12 at 5:30
Note that texdoc doesn't take you to a website, it links to documentation on your machine! it's a great tool :) – cmhughes May 16 '12 at 23:41
Yeah! I did not notice that... – Shashank Sawant May 17 '12 at 2:52
up vote 9 down vote accepted

Under most operating systems,

texdoc <packagename>

will open up the TeX documentation (in your default PDF browser) associated with the package. Alternatively, CTAN contains all the packages that form part of both the MiKTeX and TeX Live distributions, from where you can follow the links to their documentation.

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Don't forget texdoc.net – egreg May 16 '12 at 7:12

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