The package provides macros for applying a command to all elements of a list
without separators, such as '\DoWithAllIn{<cmd>}{<list-macro>}', and also for
extending and reducing macros storing such lists. Applications in mind belonged
to LaTeX, but the package should work with other formats as well. Loop and list
macros in other packages are discussed. A further package, domore, is also
provided, which enhances the functionality of dowith.
