setChar
fun setChar(x: Int, y: Int, char: Char? = null, foreground: Color? = null, background: Color? = null, bold: Boolean? = null, italic: Boolean? = null, underline: Boolean? = null, strikethrough: Boolean? = null)(source)
Sets the character and styles for a specific cell.
Providing null for any style parameter will preserve the existing value in that cell.