What is "lichtung"

lichtung is a poem of Austrian author Ernst Jandl, which combines deliberations about the directions left and right with a change of the letters l and r, so resulting in "lechts und rinks" instead of "rechts und links". It was published in Jandl's first book, Laut and Luise, (another pun, on loud "sound" and Luise, a female name sounding like "leise", quiet) and, while it consists of just one stanza, it is among the most cited of Jandl's poetry.