Text is used as labels associated with a point.
A text is a point associated with a string. This struct does not define how the text should be rendered on screen.
Trait for types that can be used as the text of this label.
The most simple solution is to use
String. However, in many cases
where the same text is used in many labels it might be desirable to use ‘string interning’
for more efficient memory usage. Then an
Rc<String> could be used for instance.