Choose View - Styles - open context menu of an entry and choose New/Edit Style - Font Effects tab.
Menu Format - Page Style - Header/Footer - Edit button (spreadsheets).
From the tabbed interface:
Choose Home then click the Home dropdown on the right-hand side of the tab and choose Character.
From the context menu:
Choose Character - Character
The changes are applied to the current selection, to the entire word that contains the cursor, or to the new text that you type.
Font Color
Sets the color for the selected text. If you select Automatic, the text color is set to black for light backgrounds and to white for dark backgrounds.
To change the color of a text selection, select the text that you want to change, and click the Font Color icon. To apply a different color, click the arrow next to the Font Color icon, and then select the color that you want to use.
The text color is ignored when printing, if the Print text in black check box is selected in LibreOffice Writer - Print in the Options dialog box.
The text color is ignored on screen, if the Use automatic font color for screen display check box is selected in LibreOffice - PreferencesTools - Options - LibreOffice - Accessibility.
Шаффофӣ
Sets the transparency of the character text. The value 100% means entirely transparent, while 0% means not transparent at all.
Transparency cannot be set for Paragraph Style and Character Style.
Text Decoration
Overlining
Select the overlining style that you want to apply. To apply the overlining to words only, select the Individual Words box.
Ранг
Select the color for the overlining.
Хаткашида
Select a strikethrough style for the selected text.
If you save your document in Microsoft Word format, all of the strikethrough styles are converted to the single line style.
Зер~хатгузорӣ
Select the underlining style that you want to apply. To apply the underlining to words only, select the Individual Words box.
If you apply underlining to a superscript text, the underlining is raised to the level of the superscript. If the superscript is contained in a word with normal text, the underlining is not raised.
Тасвир дар лавҳаи Формат:
Зерхат
Ранг
Select the color for the underlining.
Танҳо калимаҳо
Applies the selected effect only to words and ignores spaces.
Эффектҳо
Select the font effects that you want to apply.
Case
The following capitalization effects are available:
Without - No effect is applied.
UPPERCASE - Changes the selected lowercase characters to uppercase characters.
lowercase - Changes the selected uppercase characters to lower characters.
Capitalize Every Word - Changes the first character of each selected word to an uppercase character.
Small capitals - Changes the selected lowercase characters to uppercase characters, and then reduces their size.
Hidden
Hides the selected characters. To display the hidden text, ensure that Formatting Marks is selected in the View menu. You can also choose LibreOffice - PreferencesTools - Options - LibreOffice Writer - Formatting Aids and select Hidden characters.
Case
The following capitalization effects are available:
Without - No effect is applied.
UPPERCASE - Changes the selected lowercase characters to uppercase characters.
lowercase - Changes the selected uppercase characters to lower characters.
Capitalize Every Word - Changes the first character of each selected word to an uppercase character.
Small capitals - Changes the selected lowercase characters to uppercase characters, and then reduces their size.
Релеф
Select a relief effect to apply to the selected text. The embossed relief makes the characters appear as if they are raised above the page. The engraved relief makes the characters appear as if they are pressed into the page.
Сохтор
Displays the outline of the selected characters. This effect does not work with every font.
Shadow
Adds a shadow that casts below and to the right of the selected characters.
Соя
Дастгирии Забонҳои Осиёӣ
These commands can only be accessed after you enable support for Asian languages in LibreOffice - PreferencesTools - Options - Languages and Locales - General.
Нишони ҷудошавӣ
Select a character to display over or below the entire length of the selected text.
Ҷойгиршавӣ
Specify where to display the emphasis marks.
Майдони намоиши пешакӣ
Displays a preview of the current selection.
Reset
Resets changes made to the current tab to those applicable when this dialog was opened.
Истифодабарӣ
Қиматҳои тағйирёфта ё интихобшударо бе пӯшонидани муколама татбиқ мекунад.
This option appears only for Paragraph Style and Character Style.