A text box instrument allows the user to make annotations on the chart easily. This standard text box is attached to a certain point on a chart and moves along with the chart as the user scrolls it into the past or future. This means that the text box may get out of view.
In Appearance property dialog it is possible to change the text format and appearance of the text container:
Allows you to change the text color and font size. You can also choose to bold and/or italicize the text.
Text content of the text box to be typed here.
Toggles the visibility, color and opacity level for a text box background.
Toggles the visibility of a border for the text box. Can also change the border color.
Choose the font-size, font styled, font weight and font of the text
In View properties dialog you can switch the Text tool displaying on charts of different timeframes: