Uma ubheka i-SGML, i- HTML , ne-XML, ungabheka lokhu ukuqoqwa komndeni. I-SMGL, i-HTML ne-XML yizo zonke izilimi zemikhakha . I-markup term ithola impande yayo kubahleli abawenza izibuyekezo kumlobi, imibhalo yesandla. Umhleli, uma ubukeza okuqukethwe, uzophawula, umbhalo wesandla ukugqamisa amasimu athile. Ekhompyutheni yekhompyutha, ulimi lwe-markup luyisethi yamagama nezimpawu ezigqamisa umbhalo ukuze zichazwe ngedokhumenti yewebhu. Isibonelo, uma udala ikhasi le-intanethi, ufuna ukwazi izigaba ezihlukile bese ufaka izinhlamvu ngohlobo olubhekene nesibindi. Lokhu kufezwa ngolimi lwe-markup. Uma usuqonda izindima ze-SGML, i-HTML ne-XML idlala ngaphakathi kwekhasi lewebhu lewebhu, uzobona ukusebenzisana lezi zilimi ezihlukile kunomunye nomunye. Ubuhlobo phakathi kwe-SGML, i-HTML, ne-XML buyisibopho somndeni esiza ukwenza amawebhusayithi asebenze kanye nomklamo wewebhu ube namandla.
I-SGML
Kulo mndeni wezinlimi zokumaketha, uLimi Olujwayelekile Lokumaketha Olujwayelekile (SGML) ngumzali. I-SGML inikeza indlela yokuchaza izilimi ze-markup bese ibeka izinga lefomu labo. Ngamanye amazwi, i-SGML ichaza ukuthi yiziphi ezinye izilimi ezingakwazi noma ezingenakuzenza, yiziphi izakhi okumelwe zifakiwe, njengamathegi, nesakhiwo esiyisisekelo solimi. Njengoba umzali edlulisela izici zofuzo kumntwana, i-SGML idlula isakhiwo nokufometha imithetho yezilimi zokumaketha.
HTML
Ulimi lwe-HyperText Markup (HTML) lungumntwana, noma isicelo, se-SGML. I-HTML evame ukudala ikhasi le-browser ye-Inthanethi. Ukusebenzisa i-HTML, ungakwazi ukufaka izithombe, ukudala izigaba zekhasi, ukusetha amafonti nokuqondisa ukugeleza kwekhasi. I-HTML yilona ulimi lokumaketha olwenza ifomu nokubukeka kwekhasi lewebhu. Ukwengeza, usebenzisa i-HTML, ungangezela eminye imisebenzi kuwebhusayithi ngokusebenzisa izilimi zokubhala, njengeJavaScript. I-HTML yilona ulimi oluqanjelwe ukusetshenziswa kwewebhu.
I-XML
Ulimi Olwandisekayo Lwemakethe (XML) ungumzala ku-HTML nomshana ku-SGML. Nakuba i-XML iyilwimi lokumaketha ngakho-ke yingxenye yomndeni, inemisebenzi ehlukile kune-HTML. I-XML iyisigaba esincane se-SGML - sinike amalungelo wokuthi isicelo, njenge-HTML, asinakho. I-XML ingachaza izinhlelo zayo. Imithombo Yokuchaza Imithombo (RDF) uhlelo lokusebenza lwe-XML. I-HTML inqunyelwe ukuklama futhi ayinayo i-subsets noma izinhlelo zokusebenza. I-XML inguqulo ephansi, noma ekhanyayo, ye-SGML, eyenzelwe ukusebenza nge- bandwidth elinganiselwe. I-XML izuze izici zofuzo ezivela ku-SGML, kodwa idalwe ukwenza umndeni wayo. Izingxenye ze-XML zifaka i-XSL ne-XSLT.