v3.9 (20200626)
* Recompiled with the P61 flag p61exec set correctly (i.e. 1; before it was set to 0, and that caused music not to play on systems with the CPU vbr register pointing to a location other than 0).
* Avoided saving of the hiscore file when no hiscore is made.
* Moved some data to the code section, thus saving some bytes thanks to the PC-relative addressing modes.
* Made a little improvement to the startup routine.
* Fixed/improved manual.