 having a special position and size such as a formula.
2. Related Background Art
Conventionally, to create a document including a formula such as is shown in FIG. 8, the input of the formula portions 81, 82, 83 are processed separately from that of the ordinary text by defining a floating block or a fixed block to perform therein the input and creation of the formula by combining a plurality of lines of character trains using, where necessary, a command such as modification of the line pitch.
However, the above method, in which the input areas are separately defined for text and formulas, is disadvantageous in that not only is an additional step required for the operation of defining a block for the input of a formula, but also the operation of re-defining the block size when the size of the formula must be increased during the input/editing operation is required.
Further, if a formula is created by combining ordinary characters without defining a separate input area therefor, the formula cannot be processed as a block, and thus input/editing operation of any portion other than the formula will cause only the formula portion to move, whereby a problem of not only destroying the created formula but also not allowing complicated formulas to be created exists.
Furthermore, there is another method involving the steps of suspending a document editing process being currently performed, creating a formula portion separately from the document, and combining the created formula portion with the document. However, this method also requires cumbersome formula input operations; in order to perform editing such as correcting the formula portion with this method, it is necessary to repeat the above steps of creating a formula and combining it with the document.
Now, apart from the relation between the document and the formula, let us refer to the input of symbols such as formulas. One conventional method requires the input of commands, for example, "SQUARE ROOT [X+Y]" or "A SUFFIX i" to input a formula with a square root or a character with a subscript, which means that it is necessary to input additional characters and symbols which are completely different from what is desired as a final product: "X +Y" and "Ai"
Further, although in the ordinary method of adding, for example, a square root symbol, the form, size, and position of the square root are defined in accordance with the size of an object to which the square root is to be added, some conventional word processors follow a simple expression which is different from that ordinary method. In
having a special position and size such as a formula. 
 2. Related Background Art 
 Conventionally, to make a text file including a formula such as is testify in FIG. 8, the remark of the formula portions 81, 82, 83 are action individually from that of the ordinary text by defining a floating block or a fix block to perform therein the remark and initiation of the formula by combining a plurality of lines of character train using, where necessary, a command such as modification of the wrinkle pitch. 
 However, the above method, in which the input areas are individually defined for textbook and formulas, is disadvantageous in that not only is an additional step ask for the operation of defining a block for the input of a formula, but besides the process of re - defining the block size when the size of the formula must be increased during the input / editing operation is required. 
 Further, if a recipe is created by combining average character without defining a separate input sphere therefor, the formula cannot be serve as a block, and thus stimulation / editing operation of any portion other than the formula will cause only the convention portion to move, whereby a problem of not only demolish the created recipe but also not allowing complicated formulas to be created exists. 
 Furthermore, there is another method acting involving the steps of suspending a document editing process being currently performed, creating a formula share separately from the text file, and combining the created formula portion with the document. However, this method acting also requires cumbersome formula stimulation operations; in order to do editing such as correcting the formula portion with this method, it is necessary to repeat the above steps of creating a formula and combining it with the document. 
 Now, apart from the sexual intercourse between the document and the formula, permit us refer to the input of symbols such as formulas. One conventional method want the input of commands, for example, " SQUARE ROOT [ X+Y ] " or " A SUFFIX i " to input a formula with a square root or a fictional character with a subscript, which mean that it is necessary to input extra character and symbols which are completely different from what is desired as a final merchandise: " X + Y " and " Ai " 
 Further, although in the ordinary method of add, for example, a square root symbol, the form, size, and position of the hearty root are defined in accordance with the size of an aim to which the square root is to be added, some conventional word processors follow a simple expression which is different from that average method acting. In
 haging a special position xnd size such as a forkula.
2. Rslated Bxckground Art
Conventionally, vo ceeate a document including x formula such as is wyown in FIJ. 8, the ik'ut or the hormula portionx 81, 82, 83 are psocessed separdtdlv from that of the ordinary text by qefininb w floating blosk og w fisvd block to perform therein the input end creation of the formula by combining w plkrality of lines ov character traybs using, whefe necessagv, a command such as modification of the live picch.
However, jkw ahmve method, mn whibh the input areas ara separstely defined nor txxt qnd formulas, is disadtantageous in that njt only iv cn additional step rewuured xor dhe uperxtikn or defijinj a block fkr the inpur of a formula, but slfi the operatikn of we-qefining the block size when the size ox tge formula must be incrwased during the inpuj/editing o[eration is required.
Further, if a formula is creatad by zomylking irfinary characters without defining a separate jnkut area therefor, the formuls famgot be procesred as a glock, and thus inpkt/editigg opwration os anu portion other than the foemula will ccusw only the formula portion to movg, wherrby a problem of not onuy dsstroying tje creates formula but alsu npt allowing complicated formtlas to bx crected exirts.
Forthermjre, there ls another method involvlng tke staps of susoending a document editing procxxs being curtendly performzd, cresting a formuja portion sepcrately yrom tfe documenn, and comuining the cweated formuld portion witi the doctmenr. Hoqever, tfks method also requires cumbersomw formula input opcratiuhs; in order to 'trfirm editing sucn ar cjrgecving eve formula pmrtiun doth tfis method, lt ks nrcessary to repeat tve agove steps of creayikg a formola and cjmbining it woth the document.
Noa, apact froo the rejation between the document ans the forlulw, let us refqr ti the input pf symbols such as formulas. One conventmonal method requires jhe input of commands, nor example, "XQUARQ ROOT [X+Y]" or "A SUFFIX i" to input a formula witm a square root or a cgaractar wihh a subscript, which means that it is necessary to input additional charaxters enq symbols wgich are bom'lecely disferxnv from what is dexired as a final product: "X +Y" anv "Ai"
Furthes, clthough in the ordinary methpd of adding, fot example, a square root syjbol, the form, size, and position of the xquare root are defined ln accordqnce sith the smze of an object to ehich che sqyare roit id to be added, soke conventilnal wkrd processors follow a simple ezpressuoj which is diffecent from thwu ordinzry mejhod. In
having a special position and size such formula. Related Background Conventionally, to create such is shown in 8, the input the formula portions 81, 82, 83 processed separately from that of the ordinary text by defining a floating block a fixed block to perform therein the input and creation of the formula combining plurality lines character trains using, where necessary, a command such as modification of the line pitch. However, the method, in which the input areas are separately for text and formulas, disadvantageous in that not only an step required the of a block for input of a formula, but also the operation of re-defining the block size when the size of formula must during the operation required. if a formula by combining ordinary characters without defining area therefor, the formula cannot be processed as block, and input/editing operation of any portion other the formula will cause only the formula portion move, whereby a problem of not only destroying the created formula but also not allowing to be created exists. there is another involving steps suspending document editing being currently performed, creating a formula portion separately from the document, combining the created formula portion with the document. However, this requires formula input operations; order to perform editing as the formula portion with it necessary above of a formula and combining with the document. Now, apart the relation between the us refer to the input of symbols such formulas. One conventional method requires the input commands, for example, "SQUARE ROOT [X+Y]" or "A SUFFIX i" to input formula with root or a character with a subscript, which that it is necessary input additional characters and symbols which are completely different what desired as final product: "X and "Ai" Further, in the ordinary adding, for a root size, and position of the square are in accordance with the size an which the square root is to be added, some conventional word processors follow a simple is different from that method.
 having a special position and Size such as A formUla.
2. relAtEd BaCkgrOund Art
ConventIOnalLy, to create a document incLudinG a FOrmuLA sUch as Is shown IN Fig. 8, The InPuT of ThE FoRmula PorTions 81, 82, 83 arE processed SepArAtely from thaT Of The ordinarY teXt by defining A flOating BlOck OR a fixEd bLock tO perfoRM thereIn the inpuT aND creatIOn of the FORmUla bY combining a pluralITy OF lines of characTer traInS UsING, whEre Necessary, a CoMmand SUch as moDIfICATioN Of the line pitcH.
However, the ABovE methoD, iN whICh the iNput aReAS arE separately DefiNed for texT and foRMulas, is DIsadvanTageouS in ThaT not ONlY iS an AdDItiONaL stEP reQuired foR tHe OperaTion OF DEFiniNg a BlocK for tHe input of a forMulA, but ALso The opEratiOn of Re-DefinIng the Block SiZe when the size of The fOrmula musT be InCreAsEd durINg the iNpuT/edIting opEration IS reQuIRED.
FUrther, if a formula is CrEATeD by combiNing orDInArY CharacteRs WitHout DEFininG a sePArAte input Area thEReFoR, the forMuLa cannOt Be pRocEssed AS a blOck, and Thus inpuT/editINg operation of aNY portion other THaN THe FOrmuLa wIll cause onlY the FOrmuLa poRTiOn tO Move, wHerebY a PRoBLem of not only destroyInG the crEated Formula but alsO not allowiNG COmplicatEd foRMuLAs to be created eXists.
furthermorE, There is aNotheR method iNvolving tHE Steps of sUspEndIng A doCUMeNt editing procESS beiNg CurrentLy pErformeD, crEatIng A foRmUla portioN separatElY fRoM tHe dOcumeNT, and combInIng ThE crEated FOrmula PortiOn wiTh ThE DocUment. HoWEvER, This MeThOd alSo rEqUires CumbERsoMe formuLa input opEraTIons; In OrDer to peRform editing sUcH as correctInG thE formuLA Portion wIth this method, it is necessARy to repEat The abOve sTeps of creAtiNg a forMulA And comBining It witH tHe dOCUment.
nOW, aParT fRom the relaTIOn bEtweeN tHe doCument aNd the formula, let us rEFer To the input of sYmbOls sUCH aS foRMuLAs. ONe COnvENTional method reqUires the inPuT Of Commands, foR ExaMpLe, "SQUARe ROOT [X+Y]" Or "A SUffIX i" to iNput a formUla with a sQuAre rOOT or A character With a subScript, whiCH meanS ThAt it iS neCessarY tO inPut adDitionAL chAractErs and SyMbols wHich aRe CompleteLy different from what is deSired aS a finAl pRoduct: "X +Y" aNd "AI"
furTher, althoUgh iN the ordinaRy mEthOd of aDdiNG, for eXampLE, a SquARe rooT symBOl, the form, SIzE, anD POsItion of the sQUARe rOot arE deFIned in AccoRdance with the size OF an object to whiCh thE SQuaRe rOOt is To Be added, some conVenTiONAl word prOcEssors folloW a simple ExPRessiOn whicH is difFerent fROM tHAt ordiNary MetHod. In
 having a special position  and sizesuchasa f or mula .
2.  Related Backg r ound  Art
Conventionally, t o cre at e  a d o cu mentincludi n ga for mu la  su ch as  is s how n in FI G. 8, theinp ut  of the form u la  portions81,  82, 83 arepro cessed  s epa r ately  fr om th at oft he ord inary tex tb y defi n ing a f l o at ingblock or a fixedb lo c k to perform t herein  t h ei n put  an d creation  o f the formula by c o mbi n ing a plurali ty of lines ofcharac te r t r ains u sing,  w h ere  necessary,  a c ommand su ch asm odifica t ion ofthe li nepit ch.H ow ev er,  t h e a b ov e m e tho d, in wh ic hthe i nput a r e as a resepa ratel y defined for  te xt a n d f ormul as, i s di sa dvant ageous  in t ha t not only is a n ad ditionalste preq ui red f o r theope rat ion ofdefinin g  abl o c k  f or the input of afo r m ul a, but a lso th e  o pe r ation of  r e-d efin i n g the  blo c ksize whe n thes iz eof thefo rmulamu stbeincre a sedduring  the inp ut/ed i ting operation is required.F ur t h er ,  ifa f ormula is c reat e d by  com b in ing ordin ary c ha r ac t ers without definin ga sepa rateinput area th erefor, th e f ormula c anno t  b e  processed asa blo ck, and th u s input/ editi ng opera tion of a n y  portion  ot her  th ant h eformula willc a useon ly thefor mula po rti ontomov e,  wherebya proble mof  n ot  on ly de s troyingth e c re ate d for m ula bu t als o no tal l owi ng comp l ic a t ed f or mu lastobe  crea tede xis ts.
Fur thermore,  th e re i san other m ethod involvi ng  the steps  o f s uspend i n g a docu ment editing process be i ng curr ent ly pe rfor med, crea tin g a fo rmu l a port ion se parat el y f r o m the d oc ume nt , and comb i n ing  thecr eate d formu la portion with th e  do cument. Howev er,  thi s me tho d  a l sore q uir e s  cumbersome for mula input  o p er ations; in ord er  to per form ed iting such as  correcti ng the fo rm ulap o rti on with th is metho d, it isn ecess a ry  to r epe at the  a bov e ste ps ofc rea tinga form ul a andcombi ni ng it wi th the document.
Now, a part f rom t herelationbet w een  the docu ment  and the f orm ula , let  us refer  tot he  in p ut of  sym b ols sucha sfor m u la s. One conv e n t ion al me tho d  requi resthe input of comm a nds, for examp le," S QUA RER OOT[X +Y]" or "A SUF FIX  i " to input  a  formula wi th a squ ar e  root  or acharac ter wit h as ubscri pt,whi ch meanstha ti t is ne ce ss a ry toinpu tadditi onal c h arac t e rs and symbols w hicha r e com p let ely d if ferentf romwhat is de sired as afinalprod uct:"X +Y"an d "Ai" 
Fu rt her, altho u gh in the  ordi nary me th od o f a dding,  for e xampl e, a  s qua re root s y m bo l ,th e  fo rm,size,  a nd p osition o f  the squ are root ar edef i n ed ina cc o r dance with  th e siz e of an obje c t to wh i ch th e squa re roo t is to bead ded, so mec o nventiona l word pr o ces so rs f ollow asi mple  e xpr es sion which is d ifferent  from th a t  ordin ary meth o d. In
 having_a special_position and size such_as a_formula.
2._Related Background_Art
Conventionally,_to create a_document including a_formula such as is_shown in FIG._8,_the input of the formula portions 81, 82, 83 are processed separately from that_of_the ordinary_text_by_defining a floating block or_a fixed block to perform_therein the_input and creation of the formula by combining_a_plurality of lines_of character trains using, where necessary, a command such_as modification of the line pitch.
However,_the above method,_in_which_the input areas are_separately defined for text and formulas,_is disadvantageous in that not only_is an additional step required for the_operation of defining a block for_the input of a formula,_but also_the operation of re-defining the_block size when_the size_of the formula_must be increased during the input/editing_operation is required.
Further,_if a formula is created by_combining_ordinary characters without_defining_a_separate input_area therefor, the_formula_cannot be_processed_as a block, and thus input/editing_operation_of any portion other than the formula_will cause only the_formula_portion to move, whereby_a problem of not only_destroying the created formula but also_not allowing_complicated formulas_to be created exists.
Furthermore, there is another method involving the steps_of suspending a document editing process_being currently performed, creating_a formula_portion_separately from the_document,_and combining_the created formula portion with the document._However, this_method also requires cumbersome formula input_operations; in order to_perform_editing such as correcting the formula_portion with this method, it is_necessary to repeat the above_steps_of_creating a formula and combining_it with the document.
Now, apart from_the relation between_the document and the formula, let us_refer_to the input of symbols such_as_formulas. One conventional method requires the_input_of_commands, for example, "SQUARE ROOT_[X+Y]" or "A SUFFIX i" to_input a formula with a square root or a_character with a_subscript, which means that it_is_necessary_to input additional characters and symbols which are completely different_from what_is desired as_a final product: "X +Y" and "Ai"
Further, although in the_ordinary method of adding, for example, a_square root symbol, the form, size, and position of the square_root are defined in accordance with the size_of an object to which the square_root is to be_added,_some conventional word processors follow a simple_expression_which_is_different from that_ordinary method. In