Now that we have a basic application laid out, it's time to dig deep into the Text widget and learn all about how to control its content while navigating around it. We will apply these concepts by adding syntax highlighting to our existing TextArea class. Along the way, we will also touch upon the concepts of tagging areas and parsing config files.

In this chapter, we will cover:

• Tkinter's indexing system for Text widgets
• Using the tag system to alter the display of text
• Locating specific content with the search function of a Text widget
• Parsing config files

Let's begin by looking at how we can use the indexing system to pinpoint locations within a Text widget.