default: Default
up: Increase
down: Decrease
toggle: Toggle
on: 'On'
off: 'Off'
currently: currently
toggleOn: 'on'
toggleOff: 'off'

open: Open the accessibility menu
close: Close the accessibility menu
reset: Reset
resetLabel: Reset accessibility settings

textSize: Text Size
textSizeLabel: Adjust the text size
fontFamily: Font Style
fontFamilyLabel: Change the font family used
lineHeight: Line Spacing
lineHeightLabel: Adjust the space between lines of text
letterSpacing: Letter Spacing
letterSpacingLabel: Adjust the space between letters
wordSpacing: Word Spacing
wordSpacingLabel: Adjust the space between words
theme: Contrast
themeLabel: Change the text and background colours
highlightClickables: Enhance Inputs
highlightClickablesLabel: Highlight interactive parts of the page
toc: Table of Contents
tocLabel: Generate a table of contents

themeDefault: Default theme
themeBw: 'Monochrome: Black on white'
themeWb: 'Inverted monochrome: White on black'
themeBy: 'High contrast: Black on yellow'
themeYb: 'Inverted high contrast: Yellow on black'
themeBrown: White on brown