In XLL+ 6.2, we have significantly improved the implementation of
- Asynchronous functions no longer need to have a special "RtdSignal" cell.
- They now have exactly the same signature as standard synchronous functions.
- There is a lower performance cost to running a function asynchronously.
- The user experience is affected less - no cell formulae are changed,
and the update is much less intrusive.
See Asychronous functions
in the User Guide for more details.