Text can have many additional attributes, which can be adjusted in this section of the Text inspector. You can define different colors for 'Underlined', 'Strikethrough' and 'Outlined'. The outline thickness can be set with an edit field. Selector buttons near the 'Outlined' checkbox will set if the text is to be shown as an outline only, or if both the outline and the fill are to be shown.
'Fill color' and 'Transparent' are special cases. When a text
attribute is set to 'Fill color', that attribute takes its default
color from the 'Fill color' that is set in Assign text colors in the
color inspector.
'Transparent' allows the background to show through as the fill in
the text.
When an attribute is set to something other than 'Fill color',
that attribute color remains set and is not overwritten by the
color inspector.
Hint: Gradients cannot be used for text attributes.
Shadows can have a radius and an offset. The offset can be defined in independant values for horizontal (X) and vertical (Y) directions.