I n tern ati o n al I N TE R N ATI ON AL O R G AN I ZATI ON FOR S TAN D AR D l ZATl O N M E I Kfi YH AP O j J H AR D o cu m e n tati o n - D o cu m e n tat o n Fi rst U DC e d i ti o n 42 D es cri pto rs : - C aractkre s - S tan d ard de O P rAH M Al J M R IlO B i bl i o g raph i c co m m an d e C TAH ~ AP TM Al #l M ~ O R G AN l S ATl ON co n tro l I N TE R N ATI ON ALE DE N OR M ALI S ATI ON ch aracters bi bi l o g raph i q u e s 986-09-01 Ref : 0 : 0 /0 d o cu m e n tati o n , bi bl i o g raph y, co n tro l ch aracters, ch aracter sets, co d e d ch aracter sets, N o i n fo rm ati o n I S0 663 04986 (E ) i n te rch an g e P ri ce base d on pag es Foreword I S0 ( th e n ati o n al I n te rn ati o n al s tan d ard s S tan d ard s bo d y th e is n o rm al l y i n te re s te d ri g h t m e n tal D raft to be an d in m e m be r th e I S0 l e as t 75 ou t fo r S tan d ard s fo r Th e y ap pro val I n te rn ati o n al by S tan d ard in l i s o n ad o p te d I S0 6630 I S0 wi th by be fo re m e m be r Th e in was of al s o te ch n i cal acce ptan ce wi th fe d e rati o n pre p ari n g co m m i ttee s take in co m m i tte es as th e are I n te rn ati o n al I S0 m e m be r e s tabl i s h e d o rg an i z ati o n s , p art of I n te rn ati o n al E ach h as b e e n I n te rn ati o n al acco rd an ce bo d i e s a wo rl d wi d e co m m i tte e I S O, th e th e i r is wo rk te ch n i cal co m m i tte e ap pro ve d th e bo d i e s ) a te ch n i cal th at appro val are S tan d ard i z ati o n ) th ro u g h wh i ch on n o n - g o ve rn m e n tal , bod i es fo r m e m be r carri e d re pre s e n te d C o u n ci l % (I S0 a s u bj e ct I n te rn ati o n al th e O rg an i z ati o n bod i es h as g o ve rn - wo rk ci rcu l ate d to S tan d ard s by p ro ce d u re s re q u i ri n g at vo ti n g p re p are d by Te ch n i cal C o m m i tte e I S O/TC 46 , D o cu m e n tati o n U s e rs an d l ate s t @ sh ou l d th at an y e d i ti o n , n o te u n l ess I n tern ati o n al P ri n te d in th at re fe re n ce S wi tz e rl an d al l I n te rn ati o n al m ad e o th e rwi s e Org an i zati o n h e re i n S tan d ard s to an y o th e r u n d e rg o s tate d fo r Stan d ard i zati on , re vi s i o n I n te rn ati o n al 986 fro m S tan d ard ti m e to ti m e i m pl i es i ts I N TE RN ATI ON AL D o cu m e n tati o n S co pe an d I S0 STAN D ARD B i bl i o g raph i c - fi e l d of co n tro l appl i cati o n Th e i n vo ke d ‘I Th i s I n te rn ati o n al bi bl i o g raph i c fi l i n g ru l e s g ro u ps tro l set of co n tro l an d th e ch aracte r d e fi n e d S tan d ard ch aracte rs i n d e xi n g ru l e s bi bl i o g raph i c set by i s an I S0 of u se th e (I S0 of a set of catal o g u i n g Th e th e e s cape in co u n tri e s co m m u n i ty e xte n s i o n 46 co n tai n s fo r an d bas i c l an g u ag e co n tro l s e q u e n ce co n - ch aracte r ESC /l Th e Th i s l eg en d I n te rn ati o n al s pe ci fyi n g d i cati n g n o te s , i ts in e ach co d e wh i ch S tan d ard bi bl i o g raph i c po s i ti o n th e co n s i s ts In co n tro l ad d i ti o n , fu n cti o n al o f a co d e it m ed i a fo r ch e cki n g , e rro r cl au s e tabl e ch aracte ri s ti cs of an d ch aracte rs are d e s cri be d in an d in- e xpl an ato ry th e I S0 se t te n d e d bi bl i o g raph i c fo r th e co n tro l i n te rch an g e of ch aracte r set bi bl i o g raph i c is pri m ari l y 46 , I S0 i n fo rm ati o n ch aracte r It is to (see I S0 set be cl au s e 46 is in u sed 4) It in d oes acco rd an ce as an co n j u n cti o n n ot i n cl u d e th e wi th ad d i ti o n al bi bl i o g raph i c th e pro vi s i o n s co n tro l wi th th e ch aracte r co n tro l tran s m i s s i o n of co n tro l 962, Th e u ti l i z e d ati o n in u n as s i g n e d th e po s i ti o n s i n te rn ati o n al in fn fo rm a ch aracte r mm I S0 set th i s co d e d s u bj e ct ch aracte r taki n g acco u n t of o th e r I S0 - /S O 7- bi t set th e in n eed p u bl i cati o n s (see pro ce s s i n g co d e d ch aracte r i n te rch an g e ti o n pro ce s s i n g co n tro l th e e xch an g e co d e of tabl e in) s e t an d i ts - 7- b i t I m pl e m en tati o n m ag n e ti c an d - bi t of e xte n s i o n s th e 7- bi t o n g - track tap e 1 55, I n fo rm ati o n e rro rs 45 , in I n fo rm ati o n fo r 2022, d ata - Cod e - U se of l o n g i tu d i n al pari ty m es s ag e s pro ce s s i n g co m m u n i cati o n I n fo rm ati o n s e ts p ro ce s s i n g i n fo rm ati o n - B asi c m ode co n tro l p ro - s ys tem s p ro ce s s i n g e xte n s i o n - /S O 7- bi t an d - bi t co d e d te ch n i q u e s 2022 (Cl ch aracte r (0 ch aracte r s e t) set of I S0 75 , e s cape D ata p ro ce s s i n g - P ro ce d u re fo r re g i s trati o n of s e q u e n ce s ch aracte rs I S0 2 I n fo rm ati o n d e te ct I S0 of i s th e i n fo rm ati o n ce d u re s i m pl em e n tati o n of tran s m i s s i o n , in- I S0 Th e fo r i n d i vi d u al I m pl e m e n tati o n I an d d e tai l to an d 4/2 3) fo r 2, Th i s i s d e s i g n ate d /2 Re feren ces co d e d set ESC a I SO co n tro l ch aracte r s e q u e n ce /O ) ch aracte r i n cl u d e s co n tro l e s cape i m pl em e n tati o n ph ys i cal I S0 ru l e s , bi bl i o g raph i c th e (E) ch aracters bi bl i o g raph i c by 66304986 are bi bl i o g raph i c n ot to be i n fo rm - 71 54, I S O/TR D o cu m e n tati o n 8393, ( I n te rn a ti o n cati o n of - D o cu m e n tati o n S tan d ard bi bl i o g raph i c B i bl i o g raph i c - /S O B i bl i o g raph i c fi l i n g fi l i n g B i bl i o g raph i c Fi i i n g pri n ci pl e s pri n ci pl e s in Ru l es) a m o d el fi l i n g - ru l e s E xe m pl i fi - set of ru l e s I S0 Cl 663 04986 Cod e (E) tabl e set 7- bi t - bi t co d i n g co d i n g E L ;: II m I I I SSE ES6 /B E I m I D m I II m I I I I I 3 1 I m m I E E I I I I I I E II 1 II E m m E m c cl E II ml a I E E 1 1 1 I I KWB j ESC /1 KWE / ESC /1 I PSB ESC /1 PSE ESC /1 1 E E 1 D m I m cl I cl I c II 1 E II II I 1 E II 1 m E b m I I t- - - - l - - - - l E II 1 II m II 1 1 I S0 663 04986 (El Leg en d Li st ch aracter(s) , P arti al fi l i n g co n trol ch aracter pre ce d i n g A fi l i n g co n tro l ch aracte r te rm i n ati n g A d o wn fo rm at e ffecto r wi th a u n ti l m e d i ate l y th e A th e i n te rpo l ati o n , S e co n d ary a of) (stri n g so rti n g ch aracter is po s i ti o n o ffset i m ag e d fo l l o wi n g m o ve s fi rst th e pre ce d i n g th e acti ve wi th ch aracter(s) no wi th fi l i n g no val u e fi l i n g val u e to th e sh o u l d of as a co rre spon d i n g be s u ffi ci e n t P AR TI AL LI N E su perscri pt to ch aracter e i th e r UP to po s i ti o n i m ag e (P LU ) in th e restore su bse q u e n t co rrespo n d i n g ch aracte r on an fo l l o wi n g d ata i m ag i n ary ch aracters stre am i m ag i n g o r, of if as th e im- ch aracters to not an n o tati o n wi th an n o tati o n acti ve Th i s se parate d is th e be of su ffi ci e n t P AR TI AL i m ag e d pre ce d i n g fro m val u e , co n trol to sh ou l d occu rren ce ch aracter ch aracter fi l i n g po si ti o n offse t as a e i th e r LI N E to to on fo l l o wi n g (P LD ) in D OWN su bscri pt po s i ti o n i m ag e re sto re th e an i m ag i n ary ch aracters d ata as stream su bse q u en t o r, if i m ag i n g of l i n e co n tro l is se e ch aracter th e an n o tati o n s bi bl i o g raph i c wi th i n d e scri pti ve d e scri pti o n by bi bl i o g raph i c m e an s of e l e m e n ts co n te n t if d e s i g n ati o n th i s (For SI B ) te rm i n ati n g an e m be d d e d an n o tati o n wh i ch is n ot i d e n ti fi e d by m e an s of d e si g n ati o n A fi l i n g co n tro l ch aracte r to m ark th e be g i n n i n g of A fi l i n g co n tro l ch aracter to m ark th e en d i n te rpo l ati o n A fi l i n g ch aracter to m ark th e be g i n n i n g to m ark th e en d wi th i n co n tro l a fi l i n g A co n tro l A co n trol P e rm u tati o n A tro l stri n g , PSE be g i n n i n g fi l i n g of an an i n te rpo l ati o n i n s e rte d wi th fi l i n g fo r fi l i n g pu rpo se s o n l y val u e ch aracter ch aracte r fo r ch aracter a Fu n cti on al i ch aracteri sti cs bi bl i o g raph i c tro l bi bl i o g raph i c catal o g u i n g ru l e s are as an d co n tro l co n tro l an d fo r fi l i n g of to wh i ch cycl i c I ch aracter in su bj e ct u se d ch aracte r co n tro l rs m ark cau ses pe rm u tati o n u se d be twe e n i n d e xi n g in th e th e a of en d th e ch aracte rs ru l e s u s e i n th e is e m be d d e d an d of) ch aracter(s) of s u bo rd i n ate fi l i n g val u e of wi th to i n d i cate a key-wo rd in th e an ch aracter(s) th e be g i n n i n g i d e n ti fi e d el em en t of el em en t PSB co n tro l s th e o f) are co n tro l in An n o tati o n su bo rd i n ate of a th e KWB e ffe ct fron t th e a of co n tro l in val u e i ts bi bl i o g raph i c co n trol i n fo rm ati o n PSB parti al th e fi l i n g key-word bi bl i o g raph i c aro u n d to pl ace d by of tro l If is pe rm u tati o n re m n d e r of th e re is no e ffe cte d by th e wh i ch th e bi bl i o g raph i c ch aracte rs ch aracters i n fo rm ati o n po s s i bl e (stri n g bi bl i o g raph i c PSE of ru l e s are re q u i re d i n d i vi d u al g o ve rn i n g fo r u se co u n tri e s s u bj e ct co m m u n i cate d by in or i n d e x- Th e catal o g u i n g ce rtai n co n tro l ch aracte rs not ru l e d ou t by th i s ru l e s of ci rcu m s tan ce s e m be d d e d in, th e som e co u n tri e s an n o tati o n s co n te xt of th e p re s cri b e sh al l be th at ad d e d bi bl i o g raph i c u n der to , an d d e s cri pti o n to em pl o yi n g th e l atte r m o re expl i ci t Th e s e an n o tati o n s wh i ch th e bi bl i o g raph i c are of Al te rn ati ve no are a (stri n g pe rm u tati o n of an d a u se d co n j u n cti o n PSB of m ake te ch n i q u e of se q u e n ce co n tro l P e rm u tati o n te ch n i q u e s o f) occu rren ce th e u n ti l an n o tati o n A th e ch aracter(s) en d be g i n n i n g th e fo l l o wi n g offse t to co n te n t en d fi rst verti cal an n o tati o n An E m be d d e d if (stri n g acti ve th at parti al ch aracters ing a Th i s e ffe cto r i m m e d i ate l y An an n o tati o n , th e th e o ffse t a su perscri pts l an g u ag e d e fi n i ti o n s l i n e fo rm at wi th m oves ve rti cal pre ce d i n g acti ve line th at parti al su bscri pts S peci fi c an d A line acro n ym s en d line val u e , of u se to th e re ci p i e n t of i n fo rm ati o n I n te rn ati o n al ( be cau s e th e y m ay be l an g u ag e - d e p e n d e n t) , sh ou l d be S tan d ard m arke d Th e of co n tro l co n tro i an d ch aracte r ch aracte rs : re fe re n ce co n tro l s e t co n s i s ts an n o tati o n ch aracte rs o f th e fo l l o wi n g co n tro l s , an d fi l i n g fo rm at d i ffe re n t co n tro l s , e ffe cte rs cl ass e s i n d e xi n g at th e To th i s beg i n n i n g an n o tati o n wi th an n o tati o n i tse l f en d th e an d no E AB th e s pace s co n tro l E AE ch aracte r ch aracte r b e twe e n th e at two s h al l th e be en d co n tro l s p l ace d of an d th e th e 'BSO6630- 986 (E ) E xam pl e s: I n th e two i m pri n t type s are are a o f of th e b i bl i o g raph i c an n o tati o n s pre s cri b e d by th e fo r b o th of d e s cri pti o n wh i ch th e re s q u are are bracke ts I S BD : Ward , a) co rre cti o n s , e xam pl e Lo n d o n S tre e t, b) i d e n ti fi cati o n s N W [i e 31 ; p l ace is ( fo r of is 954; in by is th e u n ce rtai n ; 80 932 ( fo r [3 Pon d Wes t, of th e 44-1 48: o m i tte d ; au th o r; Vi n d o bo n ae Lo n d o n l an g u ag e RAK pu bl i cati o n ad d i ti o n s [O n tari o ] ) ; th e e xam pl e pu bl i s h e d d ate M d e n h e ad ] ; Lo n d o n e xpl an ati o n s ag e n cy an d catal o g u i n g B erl i n [S e l bs tve rl ] [be twe e n [co ve r 9351 ; [u a l if th e book if 906 an d 91 21 952 [e rs ch i e n e n l wh e re as s h o wn a fo re i g n sh o wn in ag e n cy s h al l wh i ch b) wi l l in if 2 be of re ci pi e n t m ay An n o tati o n s th e re fo re , al e rt th e in be u s e to wi sh th e re ce i vi n g to ch an g e l an g u ag e e n cl o s e d re ce i vi n g an y by ag e n cy th e to of ag e n cy, th e th e an y acti o n on es re co rd i n g E AB/E AE B E N N S D am e S R e be cca B E C o n cate n ati o n Two [Wi e n ] ) a) wi l l N S H u m ph ry a by An n o tati o n s N S M rs co n tro l s , s u cce s s i ve an o th e r th e n i n d i cate no as th at th e of of s tri n g not s h al l be CU S fi rs t th e re p l ace d a s pace u n d er co n tro l s tri n g of b e tre ate d be twe e n s h al l by b e tre ate d , Th e th e s tri n g s s e parate d m ay u n i t en d ch aracte r ch aracte r ch aracte r ch aracte rs , fi l i n g at th e fo l l o wi n g s e parati n g s u cce s s i ve ch aracte r, on e b e pl ace d s e p arati n g re q u i re d : s tri n g s s e parati n g ci rcu m s tan ce s sh al l of ch aracte r ch aracte rs as i f th e re two by CU S to was s tri n g s th e or ce rtai n Th e co n tro l ch aracte r E Be rl i n E A[u a E IA B E Al co ve r E E xam pl e : 9351 A B E M an y fi l i n g co m m as, Fi l i n g co n tro l ru l e s , OOO, OOO fi l es fi l i n g ru l e s d o cu m e n tati o n bi bl i o g raph i c fi l i n g of i n d i vi d u al ce n tre s e l e m e n ts i n fo rm ati o n or of fi l i n g al s o h as to co u n tri e s , n ot as th e y e l em en ts i n fo rm ati o n be of u se in be In is th e al ways of al l o w are p re s e n te d ad d e d to l i brari e s th e fi l i n g fo r be n u m be rs fi l e d as on e b ro ke n bY u n i t Wh e n th e th i s d e s cri pti o n as l OO90 00, a n ati o n al acce ptab l e e n vi ro n m e n t to i n te rn ati o n al th e th e re ce i ve r, e xch an g e of e xam pl e if I S0 71 54 an d al l c o ccu rs as n u m be rs , vi z an d of Tran s cri pti o n : c U , O O OU , OO O th e s ad d i ti o n bu t it m ay bi bl i o g rap h i c I S O/TR not an d of in6 fo rm ati o n , wh o l e s ti l l s bi bl i o g raph i c th at s to ps ch aracters an d Th e pre s cri be s pace s , 9393 l l n te rpo l ati o n s fo r fi l i n g are e m pl o ye d It is not al ways as pre s e n te d I n d i cati o n 62 Som e th e fi l i n g ti tl e po rate a are by or n o n - fi l i n g no parts of an th e be arti cl e n am e s u n i ts e n cl o s e d s pace s u n i ts th at n o n - fi l i n g be i n g wi th n o n - fi l i n g pre s cri be wo rk bo d i e s ch aracte rs th e ru l e s of i d e n ti fi e d of by of Th e s e th e b e twe e n at N SB th e th e be g i n n i n g pe rs o n s an d e l e m e n ts an d co n tro l N SE m ay of co r- o th e r to fi l e u n i ts m ay i n te rpo l ati o n s , i n s e rte d fo r s h al l p l ace d of th e be th e bi b l i o g raph i c fi l i n g h ave tro l ch aracte rs on p u rp o s e s fi l i n g u n i ts to be th e i n fo rm ati o n so m e ti m es re p l ace d p u rp o s e s at h ave o n l y, To a beg i n n i n g pai r an d to i d e n ti fy of at co n - th e en d i n te rpo l ati o n be co n tro l ch aracte rs ad d e d ; po s s i bl e Fo r fi l i n g E xam pl e s: an d u n i ts Th e vo l u m e ch an g e in n u m be ri n g th e co u rs e of of i ts a pe ri o d i cal pu bl i cati o n m ay h i s to ry E xam pl e s: M an y fi l i n g be g i n n i n g ru l e s of a ti tl e N N STh e S h i s to ry B E p re s cri be s h al l of th at n ot be th e d e fi n i te arti cl e at th e fi l e d n o n - fi l i n g 1 970 Vo l 971 Vo l 9721 73 Vo l Th e s l i n g fi l i n g ti tl e s ing Acco rd i n g Vo l to th e G e rm an RAK N O tto ti tl e s of n o bi l i ty are S Fti rs t B N vo n S E to sh al l ti tl e u n i ts B i sm arck, ru l e s , ru l e s n ot of fi l e Fre n ch i n cl u d i n g Vo l an d as so m e G e rm an p re s cri b e sh al l fi l i n g S I E s i e cl e E th at b e s pe l t a ti tl e s i e cl e ” re q u i re d I [vi n g ti em e l bu t ru l e s “vi n g ti e m e th e EB co u n tri e s as n u m be rs , s I [3 1 /7 B NS S Le e S B : 41 be fi l e d N s i n te rp o l ati o n Th e l i ke n u m be rs o u t “ Le 20e tran s cri p ti o n i n fo rm ati o n wo u l d in Acco rd s i e cl e ” of th e n th e be: I S0 62 S u b o rd i n ate Som e fi l i n g ru l e s s e co n d ary fi l i n g SSB/SS E is fi l i n g m ake (E) val u e a d i s ti n cti o n val u e , 663 04986 wh i l e wi th i n b o th m ay a co n s e cu ti ve o ccu r in on e s tri n g of co n s e cu ti ve ch aracte rs s tri n g of be twe e n u n i ts ch aracte rs Fo r wi th th e pri m ary fi l i n g s e co n d ary val u e u n i ts a an d p r th o s e of wi th co n tro l s o ffe re d E xam pl e s : I n ch e m i cal fo rm u l ae th e two cas e of co n s i s ti n g fo rm u l ae of al ph abe ti c i d e n ti cal bei n g l e tte rs , th e fi l i n g n u m be rs ch aracte rs an d n i o n - al ph an u m e ri cs wi th a s e co n d ary I i g n s, fi l i n g fi l i n g val u e m ay sh al l be b e b y th e take n l e tte rs i n to on l y ‘ , bu t in acco u n t - M e th yl - - d i o xyfu ro - ( ’ ’ : ) - ch ro m o n Fi l i n g acco rd i n g S e co n d ary to fi l i n g Tran s cri pti o n pri m ary val u e : fi l i n g val u e : M e th yl d i o xyfu ro ch ro m o n : s ss s ss S S - M e th yl - S S S S - d i o xyfu ro - ( ’ ’ : ) - ch ro m o n BE BE BE 63 I n d exi n g an d Ke y- wo rd Ru l es fo r th e co n tro l d e m an d i n d e x) KWB th e KWBI KWE ch aracters d e s i g n ato rs d e s cri pti o n Th e co n tro l referen ce an d s u bs e q u e n t co n tro l co n tro l an d i d e n ti fi e s th e pro ce s s i n g ch aracte rs th e fo r th e of s u bj e ct i d e n ti fi cati o n be g i n n i n g , th e i n fo rm ati o n of KWE n o tabl e m arks th e in ti tl es , ke y- wo rd s en d of s u bti tl e s l e avi n g a ke y- wo rd or th em o th e r in el e m e n ts th e i r i n co n te xt of bi b l i o g raph i c Th e re s h al l th e bi bl i o g raph i c co n te xt b e n o s pace s ( KWI C be twe e n ke y- wo rd E xam pl e s: In th e ti tl e “H i s to ry of P arl i am e n tary “P arl i am e n tary g o ve rn m e n t” an d H i s to ry WP arl i am e n tary g o ve rn m e n t K K of g o ve rn m e n tw P e rm u tati o n P e rm u tati o n is m o ved pe rm u tati o n by th e a m e an s an d PSB an d to of p ro d u ci n g th e beg i n n i n g n o n - cycl i c th e b o th of pe rm u tati o n abs e n ce of th e P SE P co u l d y S G as s e t, g e n e rate G as s e t, a J ose, J ose n am e re fe re n ce : O rte g a y see Orte g a y G as s e t, J ose P C h e m i cal S tabl e s fo r th e en g i n eer B co u l d p ro d u ce tabl e s fo r Th i s is th e B ri tai n ”, ach i e ve d fo l l o wi n g ke y- wo rd s s h al l be i d e n ti fi e d : by: K Wn i n e te e n th - ce n tu ry B ri tai n W E B th e re fe re n ce : th e e n g i n e e r, C h e m i cal an d bi bl i o g raph i c C ycl i c co n tro l pe rm u tati o n Th e , E xam pl e s: O rte g a B ri tai n ” co n tro l s co n te xt, bu t n i n e te e n th - ce n tu ry K in E B in “n i n e te e n th - ce n tu ry i n d e xi n g el e m en t i n fo rm ati o n to i n vo l ve s pe rm u tati o n wh i ch th e be i n g Th e pe rm u te d it be l o n g s e n ti re e l em en t carri e d ou t Th e re of s tri n g are two b i bl i o g raph i c aro u n d th e P SB of ch aracte rs type s of i n fo rm ati o n co n tro l is not l e ft pe rm u tati o n : Th i s in i ts cycl i c i s e ffe cte d I S0 A (E) 663 0-1 986 n o n - cycl i c pe rm u tati o n s h al l be e ffe cte d by th e p r of P SB an d P SE co n tro l s E xam pl e : P C h e m i cal P S tabl e s S fo r B pro d u ce s C h e m i cal , Form at Wh e n th e e ffe cte rs fo r th e e n g i n e e r e ffe cto r bi bl i o g raph i c P LD /P LU s cri pti o n , en g i n eer : tabl e s , th e E an d is i n fo rm ati o n sh al l re ve rs e d be by u sed u se re q u i re s E ach of E xam pl es : PP L3 L = UD co u l d 23 P g e n e rate = th e te xt: P PPPP P P aLbLl LLLLC L%LX I3 co u l d I3 uuuw g e n e rate ( a an d x are Q th e on D te xt: th e P J LLLM B u co u l d g e n e rate th e te xt: b as e l i n e) th e th at o pe n i n g o th e r a ch aracte r u se of ch aracte r one to sh al l be ch aracte r re tu rn to pl ace d e i th e r pe rm i ts th e bas e th e line abo ve or be l o w d i s pl ace m e n t or an o th e r of l e ve l th e bas e a fu rth e r of s u b- or line of l e ve l te xt, of th e su b- s u pe rs cri p ti o n or fo rm at su per-