[From string (line 4) ] @startgantt !function $completion_color($p) !return %hsluv_color($p * 120/100, 100, 50) !end function !$i = 0 !while $i <= 100 [$i] lasts 10 days and is $i% completed and is colored in $completion_color($i) !return %hsluv_color($p * 120/100, 100, 50) ^^^^^ Unknown built-in function %hsluv_color