morewrites.

The package aims to solve the error “No room for a new \write”, which occurs when the user, or when the user’s packages have ’allocated too many streams using \newwrite (TeX has a fixed maximum number – 16 – such streams built-in to its code). The package hooks into TeX primitive commands associated with writing to files; it should be loaded near the beginning of the sequence of loading packages for a document. The package uses the l3kernel bundle.