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By default TeXnicCenter activates --src -interaction=nonstopmode. The following screenshot shows the other switches but --src does not exist there.

enter image description here

Shortly speaking,

  1. What is --src for?
  2. Which is the correct one, -src or --src?
  3. Which switches are necessary to be specified when invoking latex?
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up vote 5 down vote accepted
  1. It's short for --src-specials; options can be shortened as long as they are unambiguous.

  2. Both are legal.

  3. Those that you feel necessary.

I would not use --src-specials, for it is an old method for synchronization between source and output, which is superseded by --synctex=1 (although I don't really know whether DVI previewers support the latter).

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+1 Do I need to use --src if I have PSTricks code in my document? Because internally PSTricks uses special, right? – xport Jul 1 '11 at 14:02
No, they have nothing to do with each other. – egreg Jul 1 '11 at 14:09

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