TIdDecoderQuotedPrintable is a
TIdDecoder descendant that implements the decoding algorithm for the Quoted-Printable encoding scheme. TIdDecoderQuotedPrintable will convert values that have been encoded using
TIdEncoderQuotedPrintable to their original un-encoded state. TIdDecoderQuotedPrintable conforms the decoding algorithm as described in the Internet Standards document: