Readers often ask, “What does ITG mean on my mailing label?” Or, “When does my subscription expire?” The answer is simple: ITG 15 means the subscription has fifteen Issues To Go before it expires. We publish twice a month, twenty-four times a year. To make it work out right we occasionally have a three-week, rather than a two-week, interval between issues. This usually happens in the summer and at the end of the year.