The changes are applied to the current selection, to the entire word that contains the cursor, or to the new text that you type.
Depending on your language settings, you can change the formatting for the following font types:
Western text font - Latin character sets.
Asian text font - Chinese, Japanese, or Korean character sets
Complex text layout font - right-to-left text direction
To enable support for complex text layout and Asian character sets, choose LibreOffice - PreferencesTools - Options - Language Settings - Languages, and then select the Enabled box in the corresponding area.
Enter the name of an installed font that you want to use, or select a font from the list.
Select the formatting that you want to apply.
Enter or select the font size that you want to apply. For scalable fonts, you can also enter decimal values.
If you are creating a style that is based on another style, you can enter a percentage value or a point value (for example, -2pt or +5pt).
Sets the language that the spellchecker uses for the selected text or the text that you type. Available language modules have a check mark in front of them.
If the language list consists of an editable combo box, you can enter a valid BCP 47 language tag if the language you want to assign is not available from the selectable list.
For language tag details please see the For users section on the langtag.net web site.
You can also change the locale setting for cells (choose Format - Cells - Numbers).