The next thing I'm going to do is move back up from line 16 and delete an extra line of text. There's a duplicate line reading "x means to delete something," and I've decided it must go.
First, I'd move back up to that line, typing k until I got there. You can delete text one character at a time simply by pressing x. The character that gets deleted will be the one the cursor highlights.
If that seems too tedious, you can type dw, and delete the text a word at a time. Note that vi counts the spaces in between words as words too, so I'd have to type dw nine times to delete the line.
Or you can just wipe out the entire line of text. To do that, just type dd. Since this is the fastest way to do it, I'm going to type:
dd
and the line that my cursor sits in is gone.
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