# Dividing preamble into smaller files

Preamble of my tex file is going to be so long, Can I divide it to some smaller and reusable files? I used `\include` but it seems that it did not include any thing.

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Either use `\usepackage` (for `.sty` files) or `\input` (for other files, like `.tex`). –  Werner May 17 '12 at 1:22
`\include` does not work in the preamble, because it is indented for chapters etc. See When should I use `\input` vs. `\include`? for an explanation. –  Martin Scharrer May 18 '12 at 8:28

I would separate them into different `.sty` files, and include them via `\usepackage`.