To sum up, currently there are ideas below:- Based on the text "Pandoc"- Need to consider about font designing- Something generated by Pandoc itself- Inspired by the "Input-Output Graph" image- unicode mock-up: ┋❵⇔❴┋ , ┋❵❴┋- Stefan's logo idea- Marc's idea∀┋❵❴┋∆PαndocIf you come up with another idea, please share it.Otherwise let's vote one of them.