Back surdo (L for low, H for high) R/L: accented note (right/left hand suggested r/l: Quieter, unaccent note *R or *L: Trill this note Variations MSD: L* L* -> only second half of normal; muffle optional? A series of boards, https://learn.adafruit.com/adafruit-feather/feather-specification Footprint for Mini-Circuits case CK605 (https://ww2.minicircuits.com/case_style/CK605.pdf) following land pattern PL-176, including GND vias (https://www.minicircuits.com/pcb/98-pl176.pdf Footprint for Mini-Circuits case CD542 (https://ww2.minicircuits.com/case_style/CD542.pdf) using land-pattern PL-052, including GND-vias (https://ww2.minicircuits.com/pcb/98-pl052.pdf Footprint for Mini-Circuits cas HZ1198.