Asemic Writing is a recent trend that a number of artists around the world are exploring.
“Asemic writing is a wordless open semantic form of writing. The word asemic means “having no specific semantic content”, or “without the smallest unit of meaning”. With the non-specificity of asemic writing there comes a vacuum of meaning, which is left for the reader to fill in and interpret.” Wikipedia
Cecil Touchon has been working in this vein before this trend acquired its current name. He has been working with mark making since the beginnings of his artistic explorations.