Deleted 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/03.reflexion-refraction-raytracing/03.ray-tracing/textbook.en.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/03.reflexion-refraction-raytracing/03.ray-tracing/textbook.fr.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/03.reflexion-refraction-raytracing/03.ray-tracing/topic.es.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/03.reflexion-refraction-raytracing/04.reflexion-refraction-overview/03.reflexion-refraction-beyond/annex.en.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/03.reflexion-refraction-raytracing/04.reflexion-refraction-overview/03.reflexion-refraction-beyond/annex.es.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/03.reflexion-refraction-raytracing/04.reflexion-refraction-overview/03.reflexion-refraction-beyond/annex.fr.md files