# Fill-in

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> Markdown URL: https://mediated.wiki/source/Fill-in.md
> Source: https://en.wikipedia.org/wiki/Fill-in
> Source revision: 1289558298
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**Fill-in** can refer to:

- A puzzle, see [Fill-In (puzzle)](/source/Fill-In_(puzzle))
- In numerical analysis, the entries of a matrix which change from zero to a non-zero value in the execution of an algorithm; see [Sparse matrix § Reducing fill-in](/source/Sparse_matrix#Reducing_fill-in)
- An issue of a [comic book](/source/Comic_book) produced by a different creative team than the one regularly assigned to the series, published either to avoid missing a deadline or to give one or more of the series's regular creators a break

## See also

- [Fill (disambiguation)](/source/Fill_(disambiguation))
- [Filling-in](/source/Filling-in)

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Adapted from the Wikipedia article [Fill-in](https://en.wikipedia.org/wiki/Fill-in) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Fill-in?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.