What is a low-regular-and-extra-dividend payout policy? Why do firms pursuing this policy explicitly label some cash dividend

Question:

What is a low-regular-and-extra-dividend payout policy? Why do firms pursuing this policy explicitly label some cash payments as “extra”?
Dividend
A dividend is a distribution of a portion of company’s earnings, decided and managed by the company’s board of directors, and paid to the shareholders. Dividends are given on the shares. It is a token reward paid to the shareholders for their...