* Download https://github.com/dita-ot/dita-ot/releases/download/3.5.1/dita-ot-3.5.1.zip * set settings `"xml.validation.resolveExternalEntities": true,` * Register as catalog `dita-ot-3.5.1\\catalog-dita.xml` * Open `dita-ot-3.5.1\docsrc\site.ditamap` Try to hopen map.dtd hyperlink, it doesn't work. 
"xml.validation.resolveExternalEntities": true,dita-ot-3.5.1\\catalog-dita.xmldita-ot-3.5.1\docsrc\site.ditamapTry to hopen map.dtd hyperlink, it doesn't work.