[Framers] FM 10 on a new computer.

[Peter Gold]

...

Thinking about the alternate routes through Affinity Publisher and InDesign
moved me to try this web search query: "affinity publisher compatibility
with other application file formats"

Some interesting results abide there. Marxware has some conversion tools,
as well as links to some Affinity tutorials, and a light review of an early
Affinity Publisher release's ability to use InDesign's .IDML file
interchange format (conceptual relative of FM's MIF.) The Marxware products
seem to be Mac-only. There's an inexpensive annual subscription price and a
reasonable standalone license. There's even a free InDesign file viewer.

The real issues are in the details of which FM features and output formats
your documentation relies upon, and whether you need "round-trip"
conversion from FM to another application and back that doesn't introduce
artifacts that need attention which costs more in time and effort to fix,
than sticking with FM and paying the rental fee.