ling ▁her ▁experiences ▁also ▁develop ▁throughout ▁the ▁series . ▁She ▁starts ▁out ▁recording ▁for ▁the ▁group ▁who ▁don ' t ▁want ▁to ▁die ▁un not iced ▁and ▁forgotten ▁and ▁continues ▁writing ▁for ▁herself ▁to ▁better ▁understand ▁her ▁own ▁thoughts ▁and ▁feelings . ▁Later ▁on ▁she ▁writes ▁to ▁re create ▁the ▁past ▁which ▁has ▁become ▁a ▁lost ▁world ▁to ▁her ▁and ▁preserve ▁the ▁less ons ▁that ▁she ▁has ▁lear nt ▁from ▁it . ▁The ▁Australian ▁bush ▁becomes ▁" a ▁symbol ▁of ▁stability ▁in ▁a ▁world ▁that ▁seems ▁to ▁be ▁dis integr ating ". ▁Its ▁presence ▁gives ▁hope ▁to ▁the ▁characters ▁throughout ▁the ▁series . ▁ ▁Other ▁notable ▁them es ▁in ▁the ▁series ▁are ▁the ▁role ▁of ▁family ▁and ▁friendship ; ▁sexual ▁m atur ation ▁and ▁the ▁conflic ting ▁world views ▁of ▁te en agers ▁and ▁adult s . ▁ ▁In sp iration ▁John ▁Mars den ▁was ▁inspired ▁to ▁write ▁Tom orrow , ▁When ▁the ▁War ▁Beg an ▁while ▁watching ▁an ▁AN Z AC ▁Day ▁march . ▁ ▁A ▁large ▁number ▁of ▁te en agers ▁were ▁in ▁attend ance , ▁pay ing ▁respect ▁to ▁the ▁sacrific es ▁made ▁by ▁the ▁past ▁gener ations . ▁He ▁wonder ed ▁how ▁they ▁might ▁react ▁if ▁they ▁were ▁placed ▁in ▁the ▁same ▁position ▁that ▁their ▁grand par ents ▁were ▁at ▁their ▁age . ▁He ▁felt ▁that ▁the ▁popular ▁media ' s ▁view ▁of ▁the ▁average ▁young ▁person ▁as ▁" ill iter ate , ▁drug ▁c raz ed , ▁suic idal , ▁alco hol ic , ▁criminal , ▁prom is