A Summary The editor on the IBM is called Xedit. If the file does not exist, it will be created. There are two places to enter commands in Xedit. Most commands are given on the command line at the bottom of the screen, and refer to the current line, which is always highlighted. If no first line or number of lines is specified, whole file is inserted.
D indicates descending order.
Col1 is the first column of the sort field, and col2 is the last column of the sort field.