Directions have strings associated, corresponding to their names, description or specific HTML keywords:
accesskeyDirection accesskey attribute used in navigation.
buttonDirection short name typically used for buttons.
descriptionDescription of the direction.
exampleSection number corresponding to the example used in the About special element text.
relDirection rel attribute used in navigation.
textDirection text in a few words.
‘button’, ‘description’ and ‘text’ are translated based on the document language.
The FirstInFile direction variants are associated with the same
strings as the direction they are prepended to (see FirstInFile direction variant). For example FirstInFileNodeNext is associated
with the same strings as NodeNext.