{"id":5933,"date":"2025-05-23T08:10:48","date_gmt":"2025-05-23T08:10:48","guid":{"rendered":"https:\/\/digitalservices.uwtsd.ac.uk\/llyfrgell\/mynediad-agored-ac-ymchwil\/rheoli-data-ymchwil\/cadw-data-gwaith-yn-ddiogel\/"},"modified":"2025-12-16T11:36:42","modified_gmt":"2025-12-16T11:36:42","slug":"cadw-data-gwaith-yn-ddiogel","status":"publish","type":"page","link":"https:\/\/digitalservices.uwtsd.ac.uk\/cy\/llyfrgell\/mynediad-agored-ac-ymchwil\/rheoli-data-ymchwil\/cadw-data-gwaith-yn-ddiogel\/","title":{"rendered":"Cadw data Gwaith yn Ddiogel"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"5933\" class=\"elementor elementor-5933 elementor-4234\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f042cad section-s e-flex e-con-boxed e-con e-parent\" data-id=\"f042cad\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-438c8c37 elementor-widget elementor-widget-breadcrumbs\" data-id=\"438c8c37\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/digitalservices.uwtsd.ac.uk\/cy\/\">Gwasanaethau Digidol<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-27df12bb elementor-cta--layout-image-above elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"27df12bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-cta\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/digitalservices.uwtsd.ac.uk\/wp-content\/uploads\/2025\/05\/AdobeStock_538474387-Protecting-Your-data.jpg);\" role=\"img\" aria-label=\"Dwylo&#039;n rhyngweithio \u00e2 rhyngwyneb deallusrwydd artiffisial hysbysebu diogelwch gyda sgrinion holograffig o fysell lock, olion bysedd, symbol banc, graff data, a byd\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h1 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tCadw Data Gwaith yn Ddiogel\t\t\t\t\t<\/h1>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\t<p>Rydyn ni i gyd yn gwybod ei bod yn bwysig sicrhau bod data\u2019n cael eu storio\u2019n ddiogel. Mewn termau ymarferol, mae hyn yn golygu dewis lleoliad storio addas, gyda lefel briodol o ddiogelwch, a system gadarn ar gyfer gwneud cop\u00efau wrth\u00a0gefn.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1060819e e-flex e-con-boxed e-con e-parent\" data-id=\"1060819e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-70ca2405 e-con-full e-flex e-con e-child\" data-id=\"70ca2405\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-55cf84f3 elementor-widget elementor-widget-text-editor\" data-id=\"55cf84f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Os ydych chi\u2019n gweithio fel rhan o d\u00eem, bydd angen i chi feddwl hefyd sut i ganiat\u00e1u\u2019r mynediad angenrheidiol i ddata i bob unigolyn. Efallai y bydd gan rai mathau o ddata ofynion ychwanegol: er enghraifft, bydd angen trin data personol yn unol \u00e2\u2019r ddeddfwriaeth berthnasol (gweler yr adran\u00a0<a href=\"https:\/\/digitalservices.uwtsd.ac.uk\/cy\/llyfrgell\/mynediad-agored-ac-ymchwil\/rheoli-data-ymchwil\/materion-moesegol-a-chyfreithiol\/\">Materion moesegol a chyfreithiol<\/a>\u00a0am ragor o wybodaeth am y pwnc\u00a0hwn).<\/p>\n<p><\/p>\n<p data-once=\"excludeFromOwl\">Mae angen storio\u2019ch holl ddata ymchwil yn briodol yn ystod pob cam o\u2019r prosiect. Mae polisi\u2019r Brifysgol yn nodi ei bod yn rhaid i\u2019r holl ddata ymchwil gael eu storio yn amgylchedd rheoledig y Brifysgol. Mae\u2019r amgylchedd hwn yn diogelu rhag tor diogelwch data (yn unol \u00e2 diffiniad GDPR y DU) a rhag colli a llygru data ymchwil mewn modd mwy cyffredinol, ynghyd \u00e2 mynediad ac addasu heb awdurdod. \u00a0Ar hyn o bryd mae\u2019r Brifysgol yn cynnig Microsoft OneDrive for Business fel system storio rheoledig. \u00a0Am ragor o wybodaeth, cysylltwch \u00e2\u2019r\u00a0<a href=\"https:\/\/www.uwtsd.ac.uk\/cy\/tg\">Ddesg Wasanaeth TG<\/a><\/p>\n<p><\/p>\n<p data-once=\"excludeFromOwl\">Pan fydd t\u00eem prosiect yn gweithio ar ddata ar y cyd, dylai\u2019r data gael eu storio mewn lleoliad canolog sy\u2019n hygyrch i bawb. \u00a0Gall gweithredoedd ad-hoc fel anfon ffeiliau drwy e-bost at gydweithwyr arwain at broblemau: mae\u2019n rhy hawdd i bobl gael eu hunain yn gweithio ar y fersiwn anghywir o\u2019r data, neu wneud newidiadau anghydnaws. Yn ogystal, oni bai y defnyddir amgryptio, nid yw e-bost yn cael ei ystyried yn ddull cyfathrebu diogel.<\/p>\n<p><\/p>\n<p data-once=\"excludeFromOwl\">Mae angen amddiffyniad arbennig ar gyfer rhai mathau o ddata. Yn benodol, ceir gofynion cyfreithiol yn ymwneud \u00e2 storio a phrosesu data personol (hynny yw, data am fodau dynol byw adnabyddadwy). Gallai fod gofynion moesegol ychwanegol \u2013 sicrhau bod unrhyw addewidion a wneir i gyfranogwyr ymchwil yn cael eu cadw, er enghraifft.<\/p>\n<p><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-39d71436 e-con-full e-flex e-con e-child\" data-id=\"39d71436\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3ddf13b2 elementor-widget elementor-widget-image\" data-id=\"3ddf13b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/digitalservices.uwtsd.ac.uk\/wp-content\/uploads\/2025\/05\/AdobeStock-hands-on-keyboard-300x225.jpg\" class=\"attachment-medium size-medium wp-image-3078\" alt=\"Dwylo person yn pwyso allwedd ar fysellfwrdd cyfrifiadur portatile gyda symbolau digidol o raddfa cyfiawnder a dogfen yn arddangos uwchben y bysellfwrdd mewn delwedd rhithwir werddlas\" srcset=\"https:\/\/digitalservices.uwtsd.ac.uk\/wp-content\/uploads\/2025\/05\/AdobeStock-hands-on-keyboard-300x225.jpg 300w, https:\/\/digitalservices.uwtsd.ac.uk\/wp-content\/uploads\/2025\/05\/AdobeStock-hands-on-keyboard.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-14b62ae0 section-s e-flex e-con-boxed e-con e-parent\" data-id=\"14b62ae0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7d74739e elementor-widget__width-initial e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"7d74739e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;tabs_justify_horizontal&quot;:&quot;start&quot;,&quot;horizontal_scroll&quot;:&quot;disable&quot;}\" data-widget_type=\"nested-tabs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-tabs\" data-widget-number=\"2104783774\" aria-label=\"Tabs. Open items with Enter or Space, close with Escape and navigate using the Arrow keys.\">\n\t\t\t<div class=\"e-n-tabs-heading\" role=\"tablist\">\n\t\t\t\t\t<button id=\"e-n-tab-title-21047837741\" data-tab-title-id=\"e-n-tab-title-21047837741\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-21047837741\" style=\"--n-tabs-title-order: 1;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tDyfeisiau preifat\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-21047837742\" data-tab-title-id=\"e-n-tab-title-21047837742\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-21047837742\" style=\"--n-tabs-title-order: 2;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tStorio masnachol yn y cwmwl\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-21047837743\" data-tab-title-id=\"e-n-tab-title-21047837743\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-21047837743\" style=\"--n-tabs-title-order: 3;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tCadw cop\u00efau wrth gefn\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t<div class=\"e-n-tabs-content\">\n\t\t\t\t<div id=\"e-n-tab-content-21047837741\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-21047837741\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-562852ff e-con-full e-flex e-con e-child\" data-id=\"562852ff\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3d00f65e elementor-widget elementor-widget-text-editor\" data-id=\"3d00f65e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-once=\"excludeFromOwl\">Os byddwch yn dewis defnyddio dyfeisiau storio preifat (e.e. dyfeisiau sy\u2019n eiddo i\u2019r unigolyn, neu offer a brynwyd gan ddefnyddio cyllideb prosiect ymchwil), eich cyfrifoldeb chi fydd sicrhau bod data\u2019n cael eu storio mewn ffordd briodol ac yn cydymffurfio \u00e2\u2019r holl ofynion diogelwch\u00a0perthnasol.<\/p>\n<p><\/p>\n<p data-once=\"excludeFromOwl\">Yn gyffredinol, nid yw\u2019n arfer da dibynnu ar gyfryngau storio fel cofau USB a gyriannau caled cludadwy. Gall y math hwn o ddyfais fod yn ddefnyddiol ar gyfer storio am gyfnod byr iawn neu drosglwyddo ffeiliau nad oes angen eu cadw\u2019n arbennig o ddiogel, ond nid ydynt yn ddatrysiad tymor hir gan y gellir eu colli neu eu difrodi\u2019n\u00a0hawdd.<\/p>\n<p><\/p>\n<p data-once=\"excludeFromOwl\">Os oes angen i chi ddefnyddio dull storio cludadwy, dylech sefydlu arferion gwaith sy\u2019n trosglwyddo data o\u2019r ddyfais gludadwy i leoliad diogel cyn gynted \u00e2 phosibl. Os yw\u2019r deunydd sy\u2019n cael ei storio yn cynnwys data personol, neu wybodaeth sy\u2019n gyfrinachol neu\u2019n sensitif mewn ffordd arall, dylech bob amser ddefnyddio amgryptio. Gallwch amgryptio ffeiliau neu ffolderi unigol neu\u2019r caledwedd (e.e. gliniadur, gyriant caled, allwedd USB neu ff\u00f4n symudol) y cedwir y data arno. \u00a0Mae amgryptio dyfeisiau cludadwy a ddefnyddir i storio data ymchwil (fel gliniaduron a chyfrifiaduron llechen) yn arfer da ac yn hanfodol wrth weithio gyda data personol neu ddata sy\u2019n sensitif mewn ffordd arall. Mae fersiynau diweddar o Windows a Mac OS yn cynnwys meddalwedd amgryptio wedi\u2019i hymgorffori ynddynt (BitLocker a FileVault yn y drefn honno). Cysylltwch \u00e2\u2019r\u00a0<a href=\"https:\/\/www.uwtsd.ac.uk\/cy\/tg\">Ddesg Wasanaeth TG<\/a>\u00a0am ragor o arweiniad ar amgryptio\u00a0ffeiliau.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-21047837742\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-21047837742\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\" elementor-element elementor-element-4593aff3 e-con-full e-flex e-con e-child\" data-id=\"4593aff3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-efaba97 elementor-widget elementor-widget-text-editor\" data-id=\"efaba97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"\" data-once=\"excludeFromOwl\">Yn aml gall storio masnachol yn y cwmwl fod yn ddewis atyniadol: mae\u2019n gallu bod yn gyfleus ac yn gost-effeithiol. Fodd bynnag, mae rhesymau dros fod yn wyliadwrus. Efallai na fydd y math hwn o storio yn bodloni gofynion diogelwch y Brifysgol, ac efallai na fydd yn cydymffurfio\u2019n llawn \u00e2\u2019r GDPR, gan ei wneud yn anaddas i\u2019w ddefnyddio gyda data\u00a0personol.<\/p><p class=\"\" data-once=\"excludeFromOwl\">Os ydych yn ystyried defnyddio gwasanaeth allanol i storio unrhyw ddata na fyddech yn hapus i\u2019w darparu i\u2019r cyhoedd ar y we, dylech ofyn am gyngor pellach. \u00a0Gofynnwch i\u2019r\u00a0<a href=\"https:\/\/www.uwtsd.ac.uk\/cy\/tg\">Ddesg Wasanaeth TG<\/a>\u00a0neu eich\u00a0<a href=\"https:\/\/digitalservices.uwtsd.ac.uk\/cy\/llyfrgell\/defnyddio-ein-llyfrgelloedd\/archebu-apwyntiad\/\">Cynghorydd Sgiliau Digidol<\/a>\u00a0\u00a0am arweiniad ar y system storio orau ar gyfer eich anghenion a sicrhewch eich bod yn bodloni gofynion\u00a0<a href=\"https:\/\/www.uwtsd.ac.uk\/cy\/media\/1675\/download?attachment\">Polisi Rheoli Data Ymchwil y Brifysgol\u00a0<\/a>\u00a0ac unrhyw\u00a0<a href=\"https:\/\/digitalservices.uwtsd.ac.uk\/cy\/llyfrgell\/mynediad-agored-ac-ymchwil\/rheoli-data-ymchwil\/gofynion-cyllidwyr\/\">bolis\u00efau gan gyllidwyr<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-21047837743\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-21047837743\" data-tab-index=\"3\" style=\"--n-tabs-title-order: 3;\" class=\" elementor-element elementor-element-3f4a2fe2 e-con-full e-flex e-con e-child\" data-id=\"3f4a2fe2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4197138b elementor-widget elementor-widget-text-editor\" data-id=\"4197138b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"\" data-once=\"excludeFromOwl\">Mae\u2019n hanfodol cael system ar waith i gadw cop\u00efau wrth gefn o ddata yn rheolaidd, i osgoi\u2019r risg o golli data drwy eu dileu\u2019n ddamweiniol, methiant caledwedd, neu offer yn cael eu dwyn neu\u2019u\u00a0difrodi.<\/p><p class=\"\" data-once=\"excludeFromOwl\">Dylid cadw cop\u00efau wrth gefn o ddata mewn lleoliadau gwahanol. Does dim llawer o werth gwneud ail gopi o\u2019ch ffeiliau os ydynt yn cael eu storio ochr yn ochr \u00e2\u2019r prif gopi, lle gallai\u2019r un lleidr neu d\u00e2n eich amddifadu\u2019n hawdd o\u2019r\u00a0ddau.<\/p><p class=\"\" data-once=\"excludeFromOwl\">Os oes modd, dylai\u2019r broses gwneud copi wrth gefn fod yn awtomataidd. Mae hyn yn dileu\u2019r risg o anghofio, neu fethu cael cyfle i\u2019w wneud gan eich bod yn brysur gyda phethau\u00a0eraill.<\/p><p class=\"\" data-once=\"excludeFromOwl\">Os ydych chi\u2019n gweithio gyda data personol, neu ddeunydd sy\u2019n gyfrinachol neu\u2019n sensitif mewn ffordd arall, mae\u2019n bwysig sicrhau bod eich cop\u00efau wrth gefn wedi\u2019u diogelu\u2019n ddigonol. Yn hyn o beth mae llawer o\u2019r un ystyriaethau yn berthnasol ag ar gyfer storio prif gopi eich\u00a0data.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Cadw Data Gwaith yn Ddiogel Rydyn ni i gyd yn gwybod ei bod yn bwysig sicrhau bod data\u2019n cael eu storio\u2019n ddiogel. Mewn termau ymarferol, mae hyn yn golygu dewis lleoliad storio addas, gyda lefel briodol o ddiogelwch, a system gadarn ar gyfer gwneud cop\u00efau wrth\u00a0gefn. Os ydych chi\u2019n gweithio fel rhan o d\u00eem, bydd [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":5909,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"wf_page_folders":[30],"class_list":["post-5933","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Cadw data Gwaith yn Ddiogel | Gwasanaethau Digidol | Prifysgol Cymru Y Drindod Dewi Sant<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/digitalservices.uwtsd.ac.uk\/cy\/llyfrgell\/mynediad-agored-ac-ymchwil\/rheoli-data-ymchwil\/cadw-data-gwaith-yn-ddiogel\/\" \/>\n<meta property=\"og:locale\" content=\"cy_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cadw data Gwaith yn Ddiogel\" \/>\n<meta property=\"og:description\" content=\"Cadw Data Gwaith yn Ddiogel Rydyn ni i gyd yn gwybod ei bod yn bwysig sicrhau bod data\u2019n cael eu storio\u2019n ddiogel. Mewn termau ymarferol, mae hyn yn golygu dewis lleoliad storio addas, gyda lefel briodol o ddiogelwch, a system gadarn ar gyfer gwneud cop\u00efau wrth\u00a0gefn. 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