Selecting and deselecting text
You can select and deselect characters and words. Selecting lets you edit the text.
For text editing, you can invert a text selection. Inverting a text selection lets you deselect the selected text, and select the unselected text.
To select text
Click and drag across the text you want to select.
To select all text
Click Edit, Select All.
To deselect all selected text
Click Edit, Deselect All.
To invert the text selection
Click Edit, Invert Selection.