21 Aug, 2019
By, Wikipedia
Codity code:
| s t a t e = s t a t e | < i n c l u d e o n l y > a u t o c o l l a p s e < / i n c l u d e o n l y >< n o i n c l u d e > e x p a n d e d < / n o i n c l u d e > {\displaystyle |state={state|<includeonly>autocollapse</includeonly><noinclude>expanded</noinclude>}}
Portal:Mathematics