From 2010 onwards, some emoji character sets have been incorporated into Unicode, a standard system for indexing characters, which has allowed them to be used outside Japan and to be standardised across different operating systems.
Dipper is a 12-year-old (13-year-old by the end of the series) boy who, along with his twin sister Mabel, is sent to spend his summer vacation in his great uncle's tourist trap, The Mystery Shack. He endeavors to uncover the secrets of the fictional town of Gravity Falls and to find explanations for assorted strange situations.
But over the last few decades, the age at which toddlers become diaper-free has been creeping upward. In 1957, 92 percent of children were toilet-trained by the age of 18 months, studies found. Today the figure for 2-year-olds is just 4 percent, according to a large-scale Philadelphia study. Only 60 percent of children have achieved mastery of the toilet by 36 months, the study found, and 2 percent remain untrained at the age of 4 years.