▁series ▁of ▁field - value ▁pairs . ▁ ▁Within ▁each ▁pair , ▁the ▁field ▁name ▁and ▁value ▁are ▁separated ▁by ▁an ▁equals ▁sign , ▁" =". ▁ ▁The ▁series ▁of ▁pairs ▁is ▁separated ▁by ▁the ▁am pers and , ▁" & " ▁( or ▁sem icol on , ▁"; " ▁for ▁URLs ▁embedded ▁in ▁HTML ▁and ▁not ▁generated ▁by ▁a ▁. ▁See ▁below ). ▁ ▁While ▁there ▁is ▁no ▁definit ive ▁standard , ▁most ▁web ▁frameworks ▁allow ▁multiple ▁values ▁to ▁be ▁associated ▁with ▁a ▁single ▁field ▁( e . g . ▁field 1 = value 1 & field 1 = value 2 & field 2 = value 3 ). ▁ ▁For ▁each ▁field ▁of ▁the ▁form , ▁the ▁query ▁string ▁contains ▁a ▁pair ▁field = value . ▁Web ▁forms ▁may ▁include ▁fields ▁that ▁are ▁not ▁visible ▁to ▁the ▁user ; ▁these ▁fields ▁are ▁included ▁in ▁the ▁query ▁string ▁when ▁the ▁form ▁is ▁submitted ▁ ▁This ▁convention ▁is ▁a ▁W 3 C ▁recommendation . ▁W 3 C ▁recomm ends ▁that ▁all ▁web ▁servers ▁support ▁sem icol on ▁separ ators ▁in ▁addition ▁to ▁am pers and ▁separ ators ▁to ▁allow ▁application / x - www - form - url encoded ▁query ▁strings ▁in ▁URLs ▁within ▁HTML ▁documents ▁without ▁having ▁to ▁entity ▁escape ▁am pers ands . ▁ ▁The ▁form ▁content ▁is ▁only ▁encoded ▁in ▁the ▁URL ' s ▁query ▁string ▁when ▁the ▁form ▁submission ▁method ▁is ▁GET . ▁The ▁same ▁encoding ▁is ▁used ▁by ▁default ▁when ▁the ▁submission ▁method ▁is ▁POST , ▁but ▁the ▁result