pub fn write_dsr_request<W: Write>(w: &mut W, dec: bool, ps: u16) -> Result<()>
Encode a Device Status Report request.
When dec is false, the format is ESC [ <ps> n; when dec is true, the format is ESC [ ? <ps> n.
dec
false
ESC [ <ps> n
true
ESC [ ? <ps> n