string modifiers such as DefaultModifers or course modifiers are loaded from the PlayerOptions class, from the function FromOneModString. Each modifier is separated by a comma. Putting 'no' in front of the modifier disables that modifier.

Example of modifiers: drunk,no drunk,150% drunk,*2 100% drunk

Special modifier strings

name	meaning
clearall	removes all modifiers and applies the default noteskin.
resetspeed	??? (Resets all three speed modifier values, but no idea what it does to the player)
no noteskin	Sets the noteskin to whatever is set in "DefaultNoteSkinName" in metrics.ini. (clearall also does this, but it sets it to the default noteskin if there isn't a metric set)

Modtimer

I have no idea what this class is. modtimerdefault,modtimersong,modtimerbeat,modtimergame,modtimermult,modtimeroffset.

Drawsize

I have no idea what this class is. drawsize,drawsizeback

Life & Lifebar related

name	meaning
bar	Changes the lifebar into 'bar' (The default).
battery	Changes the lifebar into 'battery', also known as 'lives'
norecover	While using the bar type, the lifebar will not recover health.
suddendeath	While using the bar type, if you miss one note you will instantly fail the song.
normal-drain	While using the bar type, the lifebar will lose and recover health normally.
lifelives	Sets the number of lives for the battery lifebar. Ex. 4 lives or 1 life or 3 life.

Failtype related

Some of these have two names for 3.9 compatibility reasons.

name	meaning
failimmediate failarcade	Sets the fail type to 'Immediate'. If all players fail, the song immediately ends and goes to the evaluation screen. Then after evaluation, it goes to the game over screen.
failimmediatecontinue failendofsong	Sets the fail type to 'ImmediateContinue'. If all players fail the song immediately ends, but after evaluation gameplay continues.
failatend	The song continues, but the player gets a game over after evaluation.
failoff	Failing is disabled.
faildefault	The failtype is obtained from the default player options. (This only means anything if the theme allows you to change the fail type in the song options menu)