+ * @brief Retrieves the line index where the glyph is laid-out.
+ *
+ * @param[in] glyphIndex The glyph's index.
+ *
+ * @return The line index.
+ */
+ LineIndex GetLineOfGlyph( GlyphIndex glyphIndex );
+
+ /**
+ * @brief Retrieves the line index where the character is laid-out.
+ *
+ * @param[in] characterIndex The character's index.
+ *
+ * @return The line index.
+ */
+ LineIndex GetLineOfCharacter( CharacterIndex characterIndex );
+
+ /**
+ * @brief Replaces lines for the given range of glyphs.