Deleted 01.cursos/00.mathematics/frontmatter.yaml, 01.cursos/00.mathematics/topic.en.md, 01.cursos/00.mathematics/topic.es.md, 01.cursos/00.mathematics/topic.fr.md, 01.cursos/00.mathematics/topic.jpg, 01.cursos/02.optics/03.the-nature-of-light/01.textbook/frontmatter.yaml, 01.cursos/02.optics/03.the-nature-of-light/01.textbook/textbook.fr.md, 01.cursos/02.optics/03.the-nature-of-light/02.cheatsheet/cheatsheet.fr.md, 01.cursos/02.optics/03.the-nature-of-light/02.cheatsheet/frontmatter.yaml, 01.cursos/02.optics/03.the-nature-of-light/03.annex/annex.fr.md, 01.cursos/02.optics/03.the-nature-of-light/03.annex/frontmatter.yaml, 01.cursos/02.optics/03.the-nature-of-light/03.annex/rays-when-focal-point-moves.gif, 01.cursos/02.optics/03.the-nature-of-light/OG_intro.mp3, 01.cursos/02.optics/03.the-nature-of-light/OG_intro.ogg, 01.cursos/02.optics/03.the-nature-of-light/Opt_geom_1.jpg, 01.cursos/02.optics/03.the-nature-of-light/chrono-opt-geo-fr-v2.jpeg, 01.cursos/02.optics/03.the-nature-of-light/chrono_opt_geo_fr_v2.jpeg, 01.cursos/02.optics/03.the-nature-of-light/chrono_text_opt_geo_fr_v2.jpeg, 01.cursos/02.optics/03.the-nature-of-light/columns.en.md, 01.cursos/02.optics/03.the-nature-of-light/columns.fr.md, 01.cursos/02.optics/03.the-nature-of-light/frontmatter.yaml, 01.cursos/02.optics/03.the-nature-of-light/sciences_optique_rays_fr.jpeg, 01.cursos/02.optics/04.sources-of-light-physical-ojects/textbook.en.md, 01.cursos/02.optics/04.sources-of-light-physical-ojects/textbook.es.md, 01.cursos/02.optics/04.sources-of-light-physical-ojects/textbook.fr.md, 01.cursos/02.optics/05.Test_chapter/01.chap1_1/01.chap1_1_1/chap1_1_1_folder_name_lecons_colonnes/lesson-columns.fr.md, 01.cursos/02.optics/05.Test_chapter/01.chap1_1/01.chap1_1_1/default.en.md, 01.cursos/02.optics/05.Test_chapter/01.chap1_1/02.chap1_1_1-2/default.en.md, 01.cursos/02.optics/05.Test_chapter/01.chap1_1/03.chap1_1_1-3/default.en.md, 01.cursos/02.optics/05.Test_chapter/02.chap1_2/01.chap1_2_1/default.en.md, 01.cursos/02.optics/05.Test_chapter/02.chap1_2/02.chap1_2_1-2/default.en.md, 01.cursos/02.optics/05.Test_chapter/02.chap1_2/03.chap1_2_1-3/default.en.md, 01.cursos/02.optics/05.Test_chapter/03.chap1_3/01.chap1_3_1/default.en.md, 01.cursos/02.optics/05.Test_chapter/03.chap1_3/02.chap1_3_1-2/default.en.md, 01.cursos/02.optics/05.Test_chapter/03.chap1_3/03.chap1_3_1-3/default.en.md, 01.cursos/02.optics/05.Test_chapter/default.en.md, 01.cursos/02.optics/frontmatter.yaml, 01.cursos/02.optics/topic.en.md, 01.cursos/02.optics/topic.es.md, 01.cursos/02.optics/topic.fr.md, 01.cursos/02.optics/topic.jpg, 01.cursos/frontmatter.yaml, 01.cursos/topics.en.md, 01.cursos/topics.es.md, 01.cursos/topics.fr.md files