I have used similar placeholders : like email adres : write frank =writef , domain name stdio> My nephew copied the habit as well.
If you ant to get rid of badblocks management: switch to ZFS , it is a dream come true. Too bad the team was bought by Oracle, but they all ran away and ZFS is and stays open source.
What is your usage of the Sylphio? I am originally a sax player (Tenor Soprano, two completely different beasts. Needs separate training to play both well. I played load because that was necessary at the times, which meant playing at home was nearly impossible. I had spare time: so i bought a synth (Yamaha SY99) and because you cannot have expression with a keyboard added a windcontroller. Found a had a huge new range of sounds. So WXX and kurzweil were a team for many years.
Exchanged the Kurzwejl for laptop with virtual instruments. Setup times and the continious fight for low latency made me switch to this new wonder :The Hydrasynth. A true very versatile wonder in a compact case.
I changed the fingering on the Syl to non sax : left pinky half tone up, right pinky half tone down. Works very well on legato play, but needs exercise, sometimes my mind changes back to original sax, more scales i than think.
Good luck with you tube case, and happy blowing !