set Text Font Weight
Changes the weight of the text in the selected range to the given weight. Required scope: "text/character"
Parameters
the text block whose weight should be changed.
the new weight of the selected text range.
the start index of the UTF-16 range whose weight should be changed. If the value is negative and the block is currently being edited, this will fall back to the start of the current cursor index / selected grapheme range. If the value is negative and the block is not being edited, this will fall back to the start of the entire text range.
the UTF-16 index after the last grapheme whose weight should be changed. If the value is negative and the block is currently being edited, this will fall back to the end of the current cursor index / selected grapheme range. If the value is negative and the block is not being edited, this will fall back to the end of the entire text range.