All Commands of the Direct Discourse, on passing into the Indirect, fall
into the subjunctive, because they are in reality dependent on some verb
like _imperâvit_, to be supplied in thought:
proinde #nê gravârêtur# sê spectandum praebêre, XXI, 289 (direct
form, #Nôlî gravârî# tê spectandum praebêre); satis cônstat Sullam
. . prôclâmâsse, #vincerent#, dummodo scîrent, XXVII, 12-15 (direct
form, #Vincite#, dummodo sciâtis).