Although people in many parts of the world share common alphabets and numeral systems, styles of handwritten letterforms vary between individuals, and sometimes also vary systematically between region
Cursive in Hungarian, with vowels in red (letters in blue are not used in children's education).
A page of the Liber Abaci. The list on the right shows the Fibonacci sequence: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377. The 2, 8, and 9 resemble Arabic numerals more than Eastern Arabic numerals or Indian numerals.
A German manuscript page teaching use of Arabic numerals (Talhoffer Thott, 1459), presented together with the Hebrew alphabet and astrology