TAIPEI, Taiwan — China has enraged several neighbors with a few dashes on a map, printed in its newly revised passports that show it staking its claim on the entire South China Sea and even Taiwan.

Inside the passports, an outline of China printed in the upper left corner includes Taiwan and the sea, hemmed in by the dashes. The change highlights China’s longstanding claim on the South China Sea in its entirety, though parts of the waters also are claimed by the Philippines, Vietnam, Taiwan, Brunei, and Malaysia.