Text widgets like this one allow you to display information in a variety of styles. Display styles are controlled using a mechanism called tags. Tags are just textual names that you can apply to one or more ranges of characters within a text widget. You can configure tags with various display styles. If you do this, then the tagged characters will be displayed with the styles you chose. The available display styles are:
These indented paragraphs illustrate how spacing can be used. Each paragraph is actually a single line in the text widget, which is word-wrapped by the widget.
Spacing1 is set to 10 points for this text, which results in relatively large gaps between the paragraphs. Spacing2 is set to 2 points, which results in just a bit of extra space within a paragraph. Spacing3 isn't used in this example.
To see where the space is, select ranges of text within these paragraphs. The selection highlight will cover the extra space.