"PHT-splines are only <i>C<sup>1</sup></i>-continuous.",
"You can contribute your favorite OpenFlipper tips and geometry fun facts to the collection by editing <a href=\"https://graphics.rwth-aachen.de:9000/born/Plugin-DidYouKnow/blob/master/Library/tips.json\">this file</a>.",
"While in Selection mode, hold down the Windows key to temporarily switch to Move mode.",
"The name “tessellation” comes from the Latin word “tessera”, the word for a small, usually square, stone tile used to make mosaics.",
"Parallel lines can intersect in non-Euclidean spaces.",
"Any B-Spline curve segment whose knots are either 0 or 1 in equal parts is also a Bézier curve.",
"Any B-spline curve segment whose knots are either 0 or 1 in equal parts is also a Bézier curve.",
"The boundary of a boundary is empty.",
"The maximum number of mutually touching spheres in <i>R<sup>n</sup></i> is <i>n</i> + 2.",
"A Klein bottle can be built by gluing two Möbius bands together along their boundaries.",
