  In our era of rapid technological advancement, the research landscape for
writing assistants has become increasingly fragmented across various research
communities. We seek to address this challenge by proposing a design space as a
structured way to examine and explore the multidimensional space of intelligent
and interactive writing assistants. Through a large community collaboration, we
explore five aspects of writing assistants: task, user, technology,
interaction, and ecosystem. Within each aspect, we define dimensions (i.e.,
fundamental components of an aspect) and codes (i.e., potential options for
each dimension) by systematically reviewing 115 papers. Our design space aims
to offer researchers and designers a practical tool to navigate, comprehend,
and compare the various possibilities of writing assistants, and aid in the
envisioning and design of new writing assistants.
