<itemvalue="An optional maximum number of lines for the text to span, wrapping if necessary. If the text exceeds the given number of lines, it will be truncated according to [overflow]. If this is 1, text will not wrap. Otherwise, text will be wrapped at the edge of the box. If this is non-null, it will override even explicit null values of [Text.maxLines]."/>
<itemvalue="An optional maximum number of lines for the text to span, wrapping if necessary. If the text exceeds the given number of lines, it will be truncated according to [overflow]. If this is 1, text will not wrap. Otherwise, text will be wrapped at the edge of the box. If this is null, but there is an ambient [DefaultTextStyle] that specifies an explicit number for its [DefaultTextStyle.maxLines], then the [DefaultTextStyle] value will take precedence. You can use a [RichText] widget directly to entirely override the [DefaultTextStyle]."/>
<itemvalue="{@template dart.ui.textHeightBehavior} Defines how to apply [TextStyle.height] over and under text. [TextHeightBehavior.applyHeightToFirstAscent] and [TextHeightBehavior.applyHeightToLastDescent] represent whether the [TextStyle.height] modifier will be applied to the corresponding metric. By default both properties are true, and [TextStyle.height] is applied as normal. When set to false, the font's default ascent will be used. [TextHeightBehavior.leadingDistribution] determines how the leading is distributed over and under text. This property applies before [TextHeightBehavior.applyHeightToFirstAscent] and [TextHeightBehavior.applyHeightToLastDescent]. {@endtemplate}"/>
<itemvalue="An unmodifiable list of the UTF-16 code units of this string."/>
<itemvalue="Spacer creates an adjustable, empty spacer that can be used to tune the spacing between widgets in a [Flex] container, like [Row] or [Column]. The [Spacer] widget will take up any available space, so setting the [Flex.mainAxisAlignment] on a flex container that contains a [Spacer] to [MainAxisAlignment.spaceAround], [MainAxisAlignment.spaceBetween], or [MainAxisAlignment.spaceEvenly] will not have any visible effect: the [Spacer] has taken up all of the additional space, therefore there is none left to redistribute."/>