Before you begin, you must complete Exercise 3.8: Finding and replacing text.
The editor allows you to filter or subset your source so that you see only lines containing a given string. Filtering lines makes it quick and easy to find lines without having to scroll through your source.
To filter source by string:
Now you want to show the entire source again.
Your cursor is still positioned on the same line that you moved the cursor to, even though all lines are now showing.
You have filtered your source so that you see only lines containing a given string and now you are ready to begin Exercise 3.10: Filtering lines by type.
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