By the end of this lesson, you can identify the date and topic in a lesson filename. For this exercise, the name starts with a four-digit year, a two-digit month and a two-digit day. The topic comes after the date. Look at the first example. Its date is October eighth, twenty twenty-six, and its topic is camera basics. Now look at the second example. Pause the video and identify its date and topic. Ready? The date is October fifteenth, twenty twenty-six. The topic is lighting. For practice, write a filename for a lesson about sound recorded on October twenty-second, twenty twenty-six. Check that the year, month, day and topic are all present.