tap the
Tools icon in the right corner of the top toolbar,
tap the arrow next to the
Document Settings menu item.
Currently, the following advanced settings are available:
Document language is used to enable or disable the spell checking function. This option also affects spell-checking operations.
Show non-printing symbols is used to display or hide nonprinting characters in the document text.
Color schemes is used to select the necessary Color scheme of the document. It allows you to change the default color palette for document elements (font, background, autoshapes and charts).