> instead of HTML you use a custom markup language
That rarely happens in practice. The vast majority of developers put HTML, XML and JSON+(link extensions) to use as hypertext/hypermedia substrate. These are not custom languages, but applications of standard languages.
That rarely happens in practice. The vast majority of developers put HTML, XML and JSON+(link extensions) to use as hypertext/hypermedia substrate. These are not custom languages, but applications of standard languages.