seqsplit provides a command \seqsplit, which makes its argument splittable anywhere, and then leaves the TeX paragraph-maker to do the splitting. The package is suitable for situations when one needs to type long sequences of letters or of numbers in which there is no obvious break points to be found, such as in base-sequences in genes or calculations of transcendental numbers. While the package may obviously be used to typeset DNA sequences, the user may consider the dnaseq as a rather more powerful alternative.