SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions XPROC0 = 'arfgen spectrumset=fullrun_pn_xmm0503560301_pi300-10000_pass1_cl_sr&'CONTINUE 'c27_src.pi rmfset=response.ds withrmfset=no arfset=fullrun_pn_xmm05&'CONTINUE '03560301_pi300-10000_pass1_cl_src27.arf detmaptype=flat detmaparray&'CONTINUE '=detmapfile.ds: detxoffset=1200 detyoffset=1200 withdetbounds=no de&'CONTINUE 'txbins=5 detybins=5 psfenergy=2 filterdss=yes filteredset=filteredp&'CONTINUE 'ixellist.ds withfilteredset=no sourcecoords=eqpos sourcex=0 sourcey&'CONTINUE '=0 withsourcepos=no extendedsource=no modeleffarea=yes modelquantum&'CONTINUE 'eff=yes modelfiltertrans=yes modelee=yes modelootcorr=yes eegridfac&'CONTINUE 'tor=100 withbadpixcorr=yes badpixlocation=../../../xmm0503560301/pr&'CONTINUE 'oducts/events/fullrun_pn_xmm0503560301_pi300-10000_cl.evt.gz psfmod&'CONTINUE 'el=notSpecified badpixelresolution=2 setbackscale=no keeparfset=yes&'CONTINUE ' useodfatt=no ignoreoutoffov=yes crossreg_spectrumset='''' crossreg&'CONTINUE 'ionarf=no # (arfgen-1.80.1) [xmmsas_20110223_1801-11.0.0]' XDAL0 = 'fullrun_pn_xmm0503560301_pi300-10000_pass1_cl_src27.arf 2012-04-08T&'CONTINUE '00:35:58.000 Create arfgen (arfgen-1.80.1) [xmmsas_20110223_1801-11&'CONTINUE '.0.0] High SAS_MEMORY_MODEL= SAS_ROWS= SAS_ZERO_ROWS= SAS_COLUMN_WI&'CONTINUE 'SE= ' CREATOR = 'arfgen (arfgen-1.80.1) [xmmsas_20110223_1801-11.0.0]' / name of code DATE = '2012-04-08T00:36:08.000' / creation date LONGSTRN= 'OGIP 1.0' HISTORY Created by arfgen (arfgen-1.80.1) [xmmsas_20110223_1801-11.0.0] at 2012-HISTORY 04-08T00:35:58 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 2067 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row TTYPE1 = 'ENERG_LO' / No comment TFORM1 = 'E ' / data format of field: 4-byte REAL TUNIT1 = 'keV ' / physical unit of field TTYPE2 = 'ENERG_HI' / No comment TFORM2 = 'E ' / data format of field: 4-byte REAL TUNIT2 = 'keV ' / physical unit of field TTYPE3 = 'SPECRESP' / No comment TFORM3 = 'E ' / data format of field: 4-byte REAL TUNIT3 = 'cm2 ' / physical unit of field EXTNAME = 'SPECRESP' / The name of this table TELESCOP= 'XMM ' / mission/satellite name INSTRUME= 'EPN ' / instrument/detector name FILTER = ' ' / filter in use ARFVERSN= '1992a ' / OGIP classification of FITS format HDUCLASS= 'OGIP ' / Format conforms to OGIP standard HDUCLAS1= 'RESPONSE' / dataset relates to spectral response HDUCLAS2= 'SPECRESP' / dataset is a spectral response matrix HDUVERS1= '1.0.0 ' / Obsolete - included for backwards compatibilityHDUVERS2= '1.1.0 ' / Obsolete - included for backwards compatibilityHDUVERS = '1.1.0 ' / the version of the HDUCLAS2 format in use END =L=P`?M=P`=T@[=T=Y@Z=Y=]/@4=]/=aGA( =aG=e`BANn=e`B=ixAq =ix=mhA+$=mh=qA=q=uA=u=y#A=y#=}Ae=}=%AQ=%=oA!=o=B ==+B=+=7LB&=7L=CB8 =C=OBG=O=\)BR=\)=hsBS$#=hs=tB>l=t=B ==PA=P=Aɢ==A ==-A=-=wAt=w=Ac== A= =TA0=T=A==A ==1A=1={A={= Ag= =-Awc=-=9XAjH]=9X=EA]n=E=QAOȿ=Q=^5A>8=^5=jA&Q=j=vA =v=@==\@N=\=ě@-=ě=Ƨ@g=Ƨ=ȴ9A=ȴ9=AA\>>%AZ>%> JAa> J>oAmmy>o>A}L>>A0;>>$AԈ>$>+AH>+>1'A>1'> 7LA> 7L> =qA-L> =q> CA׈> C> IAߎS> I> OA旒> O>VA/>V>\)A>\)>bNAW>bN>hsB>hs>nBX>n>tB >t>zB 9>z>B(>>+B>+>PB>P>uB>u>B>>BS>>B>>B(+>>-B89>->RBN>R>wBy>w> ĜBYZ> Ĝ>!Bՠ>!>"BB>"># B)># >$/B>$/>%TB )>%T>&yB" >&y>'B&">'>(B+m<>(>)B0l>)>+ B6U:>+ >,1B= >,1>-VBD^_>-V>.{BL/O>.{>/BT>/>0 B^>0 >1&Bj4L>1&>2-Bu@>2->333B~>333>49XBG>49X>5?}BU>5?}>6EB>6E>7KBM>7K>8QB>8Q>9XB>9X>:^5Bs>:^5>;dZB>;dZ>=pB8>=p>>vBZ>>v>?|B18>?|>@B`>@>A7B>A7>B\B7>B\>CB>C>DB*>D>EBPO>E>FBp>F>GB>G>H9BR>H9>I^BW>I^>JB>J>KƨB>Kƨ>LB>L>MB>M>NBH>N>O;BLd>O;>P`Bw>P`>QB(>Q>RB]>R>SB>S>TB¶0>T>VBĠ>V>W =BǓ>W =>XbB::>Xb>YB>Y>ZBT>Z>["B>[">\(BY>\(>]/B>]/>^5?B>^5?>_;dB唖>_;d>`AB0>`A>aGB>aG>bMB}8>bM>cSB\v>cS>dZB(9>dZ>e`BCٱ>e`B>fffC>fff>glC>gl>hrCC>hr>ixC<>ix>j~C d>j~>kC 9>k>lDC R>lD>mhC r>mh>nCB{>n>oCZ>o>pCk>p>qC>q>r!Cu&>r!>sFC8>sF>tjCQ>tj>uCN>u>vȴCW>vȴ>wCڔ>w>xCO>x>y#C>y#>zHC!P>zH>{mC">{m>|C$>|>}C&Y>}>~C(>~>C)>>C+{>>%C->%>7C.>7> JC08D> J>\C1>\>oC3;I>o>C4 >>C5>>C72>>C8>>C9>>$C;r_>$>C<>>+C>>+>C@k>>1'CAx>1'>9CBۗ>9>7LCD7.>7L>^CE>^>=qCG >=q>CH#>>CCJA>C>ƨCL>ƨ>ICM>I>CO҂>>OCQ>O>CSH>>VCT>V>CV>>\)CXz>\)>;CZ>;>bNC\3>bN>`C]1:>`>hsC\ҏ>hs>C>>nB[>n>C0/>>tC͏>t>B>>zB>z>BO>>B#F>>BJ>>+B]>+> =BM> =>PBt5>P>bBvGO>b>uB!>u>BAQ>>#B>#>"BNL>">Bz>>5?BP>5?>wBZ>w>GC>G>C>>ZCt*>Z>TC[>T>lC>l>C>>~C">~>1C)>1>hC.>h>C3f>>C8sf>>-C=>->FCA>F>?}CE>?}>ȴCH&>ȴ>QCJ>Q>#CMQ>#>dZCOH>dZ>CR>>vCV5>v>CYv,>>7C]B>7>oCa4>o>ěCd>ě>$Chlz>$>ǮCl&l>Ǯ>7LCoF>7L>CsE>>ICvXk>I>Cy>>\)Csk>\)>`CeF>`>nCd >n>Cnk>>ՁCy>Ձ> =C~[x> =>ؓuC>ؓu>C>>>ۥC`>ۥ>/C?>/>޸RC>޸R>AC7m>A>C'>>SC>S>/C-i>/>ffC:>ff>C#>>xCF>x> C> >DC*3>D>{C>{>C{>>&CQH>&>!C>!>9XCd>9X>Cw>>KC`W>K>C&>>^5CW>^5>mCU>m>pCR|>p>C~ >?AC?A?%CӔ?%?CT??\C!?\?SC*?S?C d??jC{?j?C??`BCRC?>R??|CF??|?@ACƩ?@A?A%CO^?A%?AC?A?B\CLe?B\?CSC?CS?DCV?D?D/Cٖ?D/?ECZ?E?FffC?Fff?G+CZ?G+?GCO?G?H9CDp?H9?IxCܧ?Ix?J=qC?J=q?K Ca?K ?KƨC?Kƨ?LDCSM?LD?MOC?MO?N{CL?N{?NC߼?N?OC?O?PbNCp?PbN?Q&C?Q&?QC+?Q?R!C9?R!?StC?C?dZC?dZ?˅C?˅?˥Ce?˥?ƨC?ƨ?mCF?m?1C?1?(C?(?IC?I?jC?j?̋DCl?̋D?̬C8.?̬??}C??}?θRCL?θR?УCc?У?ҏ\C>?ҏ\?zC?z?ffC ?ff?QCo?Q?=qC/{?=q?۶FC?۶F?IC?I?jCk?j?܋DC?܋D?ܬC?ܬ?C`??C??VC?V?/Cר?/?OC_?O?pC?p?ݑhC ?ݑh?ݲ-C?ݲ-?C??C.??{C$>?{?5?C2?5??VCC?V?vCN6?v?ޗCZO?ޗ?޸RCdJ?޸R?Cj??Cp2??Cs??;dCuv?;d?\)Cv??\)?|Cv?|?ߝCx>?ߝ?߾wCy?߾w?;C{?;?C}?? Cs? ?AC?A?bNC?bN?C??C,??ĜC,?Ĝ?`C?`?%C?%?&CA?&?GC|?G?hsC?hs?7Cf?7?C??Cb??C?? JC ? J?-CH?-?MC(T?M?nC6%?n?\CC?\?!CP?!?C]??Ci??oCvH?o?33C?33?SC^?S?tCQ?t?㕁C?㕁?FC?F? C? ?C??C%??9XCc?9X?ZC?Z?zC?z?䛦C)?䛦?jC?j?/C$?/?C??C:???}C??}?`BC?`B?C??C??Cs??TC?T?C??$C?$?EC?E?ffC?ff?+C?+?C??ȴC X?ȴ?yC"?y? =C? =?+C|?+?KC?K?lC&?l?PC,?P?C3z??C9??C@ ??bCFx?b?1'CL?1'?QCR?Q?rCYF?r?uC_?u?9Ce?9?Cn??Ct??C{ ??7LC1?7L?XCu?X?xC?x?陚C?陚?^C"?^?#C$?#?C!??C??=qC!?=q?^5C?^5?~C ?~?ꟾCX?ꟾ?CŴ??HC!?H? C? ?"Cyn?"?CCD2?C?dZC?dZ?C??C2??ƨCl?ƨ?mC?m?1C?1?(C?(?ICֶ?I?jC%?j?DCy[?D?CȽ??C ??C??VCF?V?/C?/?OC"?O?pC?p?hCϸ?h?-C ?-?C??C??{C?{?5?C?5??VC?V?vCܦ?v?C??RC]?R?CӸ??C-??C??;dC0o?;d?\)CNm?\)?|CmA?|?C??wCD?w?;C?;?C.?? C b? ?ACG?A?bNC(g?bN?C7v??CFh??ĜCR?Ĝ?`CZ9?`?%Ca?%?&Ci?&?GCo ?G?hsCv]?hs?7C}j?7?Ce??C}??C?? JC ? J?-C?-?MC?M?nC/?n?\CO?\?!C?!?C|??C??oC?o?33C?33?SCM?S?tC?t?C??FCŘ?F?IC?I?Cn??C??DA??D??pD"f?p?\)D-j?\)@D0q@@D7|@@\D@@\@DFC@@zD:h@z@pD@p@ffCՒ@ff@\)C@\)@QCm@Q@ GCh@ G@ =qC@ =q@ 33C@ 33@ Cm?@ @ 9XCP@ 9X@ IC~@ I@ ZCtO@ Z@ jC9@ j@ zC@ z@ DC@ D@ C} @ @ C;@ @ jC@ j@ C(@ @ /C@ /@ CK=@ @ C@ @ VC@ V@ C@ @ /Cfg@ /@ ?}C@ ?}@ OCD@ O@ `BCm@ `B@ pC@ p@ C?@ @ hC>@ h@ C?@ @ -C@ -@ C@ @ Ct @ @ TC5@ T@ C@ @C@@{Cb@{@$C<@$@5?Ci@5?@EC@E@VCZ@V@ffC9 @ff@vC~@v@+C4@+@Cg@@C7g@@RCe@R@ȴC㍣@ȴ@C0@@yC@y@CO@@ =C@ =@Ci~@@+Cr5@+@;dC@;d@KC|g@K@\)C&@\)@lCz1@l@|C D@|@PC͒@P@C@@Cȑ@@wC @w@Cr@@;C@;@C=@@Cz@@bCUn@b@ C@ @1'Co@1'@AChE@A@QC]@Q@bNC@bN@rC@r@C({@@uC@u@C] @@9CAE@9@ĜC>X@Ĝ@CS@@`C@`@C@@%CM@%@C@@&CX?@&@7LC@7L@GC@G@XC@X@hsC@hs@xCp]@x@7Cb@7@CY@@CT@@^CR@^@CP@@#CO@#@CK@@CEU@@ JC4@ J@C4@@-C@-@=qCO@=q@MCJ@M@^5C@^5@nCɾ@n@~Ca@~@\C@\@C@@!C#@!@C @@C;@@HCz@H@Cu@@ C&@ @oC@o@"C@"@33C @33@CC#U@C@SCF@S@dZCr @dZ@tC@t@C0@@C@@C@@FCa@F@ƨC@ƨ@ C@ @mC@m@CsU@@1CN@1@C"P@@(C=@(@9XCv@9X@IC/@I@ZC:@Z@jC@j@zC@z@DC"F@D@C@@C@@jC{Cw@>{@? =C@? =@@Cwy@@@@C @@@AC:m@A@BHC|@BH@C Cc@C @DC:@D@ECw@E@FRCr @FR@GC*H@G@HC;@H@IC]@I@J\Cr@J\@KC@K@LzCj@Lz@MpC/~@Mp@NffCO@Nff@O\)C"@O\)@PQC@PQ@QGC=@QG@R=qCڑ@R=q@S33CI`@S33@T(Cl@T(@UC@U@V{C@V{@W =CEo@W =@XCaA@X@XCZ7@X@YCTB@Y@ZHCRF@ZH@[ C@[ @\Ced@\@]C-@]@^RC/@^R@_Ce@_@`C6@`@aCzP@a@b\C82@b\@cC@c@dzCf@dz@epCi@ep@fffC@fff@g\)C@g\)@hQCN@hQ@iGC2@iG@j=qCU@j=q@k33C4@k33@l(C@l(@mCS@m@n{CP@n{@o =Cd@o =@pCQ@p@pCi"@p@qC˙@q@rHC@rH@s Cv@s @tC^v@t@uC\@u@vRC^@vR@wCQ@w@xCD@x@yCU@y@z\C@z\@{C@{@|zC@|z@}pCތ@}p@~ffC@~ff@\)CZ@\)@(CJ@(@CS@@CV;@@Ca@@{C@{@\C7@\@ =C#@ =@C@@CV|@@zCC8@z@CCo@@pCD@p@CK@@ffCv@ff@HC@H@\)C@\)@ C@ @QC@Q@C@@GCo@G@C@@=qC@=q@RC#@R@33C@33@C@@(CB@(@Cn@@CT@@Cc@@{CU@{@\C@\@ =C`@ =@C%@@CQ@@zCp@z@C͝@@pC)@p@CB@@ffC/@ff@HC @H@\)C@\)@ C*r@ @QCL@Q@C<@@GC+@G@C@@=qC_@=q@RCT@R@33C@33@C|@@(C|@(@CN@@C!#@@CE@@{CH@{@\C)D@\@ =Cw@ =@C*@@C@@zC@z@C@@pCzF@p@Ci@@ffC@ff@HC@H@\)CJ @\)@ CϺ@ @QCcA@Q@C9%@@GC*@G@Cg@@=qC%@=q@RCR@R@33CD@33@C@@(Cu@(@Cx@@C@@C:@@{C@{@\C\@\@ =C@ =@C}@@CR@@zC@z@C@@pC}Y@p@CT@@ffCY@ff@HC @H@\)C@\)@ C@ @QC'@Q@C@@GC@G@C,@@=qCB@=q@RC@R@33CG@33@C{@@(Cdd@(@C@@C@@C@@{CPH@{@\C@\@ =CK@ =@C@@Ci@@zC@z@CNx@@pCC@p@C)H@@ffCi@ff@HC @H@\)C^@\)@ C@ @QC]@Q@C@@GC'@G@C@@=qCB@=q@RCH@R@33Cc@33@C@@(CX@(@C@@C @@C @@{C@{@\Cf@\@ =C­@ =@C @@C@@zCz@z@Cx@@pC@p@C@@ffCK@ff@HC#@H@\)C.@\)@ C@ @QC]c@Q@C@@GC`@G@C'@@=qCJ@=q@ƸRC@ƸR@33C]@33@ǮC/@Ǯ@(C@(@ȣC@ȣ@C?@@əCT@ə@{CH@{@ʏ\C@ʏ\@ =C@ =@˅C"s@˅@C@@zCKL@z@C؃@@pCd@p@C@@ffC@ff@HCf@H@\)C@\)@ C@ @QC~@Q@C@@GC@G@C}`@@=qC{0@=q@ҸRCy@ҸR@33CwO@33@ӮCu@Ӯ@(Ct@(@ԣCt"@ԣ@Cso@@ՙCr@ՙ@{Crn@{@֏\CqB@֏\@ =CpD@ =@ׅCn@ׅ@Cm>@@zCkM@z@Ci> @@pCg2g@p@CeJ@@ffCc@ff@HCbY2@H@\)Ca-@\)@ C`@ @QC_"@Q@C^@@GC]%t@G@C\ |@@=qC[ &@=q@޸RCYV@޸R@33CX@33@߮CW@߮@(CV@(@CU[@@CT/@@ᙚCS0@ᙚ@{CQz@{@\CP@\@ =COX@ =@CN@@CLٔ@@zCK@z@CJg@@pCI:B@p@CH@@ffCG{@ff@HCE7@H@\)CD1@\)@ CC@ @QCB@Q@CAw)@@GC@y@G@C>R@@=qC<פ@=q@RC; @R@33C9Ei@33@C79@@(C6 @(@C4@@C3@@홚C2 @홚@{C2@{@\C1g@\@ =C0'@ =@C0@@C/B@@zC.cc@z@C-[@@pC,(p@p@C*@@ffC)p@ff@HC(@H@\)C&@\)@ C%R@ @QC$$}@Q@C#i@@GC"1o@G@C!U@@=qC @=q@RC@R@33CH@33@C @@(C#@(@C @@Ce@@C@@{C}Y@{@\C/D@\@ =C@ =@C@@C;@@zCx9@z@C@@pC@p@C@@ffC @ff@HCC@H@\)C }@\)@ C g@ A(C MA(AffC &AffAC hAAHC AHACTAA\)C;A\)ACyAA C`A A{C؏A{AQCAQA\C.A\AC4AA =C[A =AGBAGAB$KAABxAAB oAA=qBA=qAzBYAzARBARABAA33BA33ApB#oApABHAABiAA(BuA(AffBbAffAB!AAHBZAHABAA\)B@A\)ABAA BA A{BA{AQB?AQA\B=A\ABڦAA =B9A =A GBdA GA B֢(A A Bk&A A B8vA A =qBA =qA zBÝA zA RBs~A RA B A A 33B}A 33A pBţA pA BA A BA A (B-:A (A ffBW"A ffA B›%A A HB%A HA BA A \)BA \)A BA A BYA A{B-A{AQBAQA\BVA\ABAA =B9A =AGB+AGABAABZAABŻAA=qBA=qAzB AzARB4ARABQiAA33BA33ApBApABAABxAA(B7A(AffBAffABoAAHBG0AHABtAA\)BA\)AB5AA BpA A{BA{AQB0AQA\B{A\ABAA =BeXA =AGB48A:=qA:zA]A:zA:RAQRA:RA:AA:A;33A}EA;33A;pAw!A;pA;AqA;A;AjHA;A<(AcA<(A{A%xA>{A>QAuA>QA>\@9A>\A>@kA>A? =@^A? =A?G@YSA?GA?@g(A?A?@ˆA?A@@UA@A@=q@ڑA@=qA@z@A@zA@R@A@RA@@A@AA33@dAA33AAp@һ.AApAA@_AAAA@AAAB(@AB(ABff@}ABffAB@ABABH@ѯABHAC@5ACAC\)@бAC\)AC@' ACAC @ϓAC AD{@AD{ADQ@UADQAD\@ͬAD\AD@ADAE =@JAE =AEG@˕IAEGAE@ AEAE@AEAF@KAFAF=q@SAF=qAFz@9AFzAFR@AFRAF@ĸAFAG33@VYAG33AGp@AGpAG@_-AGAG@AGAH(@=AH(AHff@AHffAH@AHAHH@(AHHAI@HAIAI\)@:AI\)AI@pAIAI @ AI AJ{@'AJ{AJQ@AJQAJ\@wAJ\AJ@AJAK =@ AK =AKG@&AKGAK@SAKAK@AKAL@<+ALAL=q@AL=qALz@ALzALR@hALRAL@ALAM33@xAM33AMp@ AMpAM@vAMAM@@AMAN(@4AN(ANff@m|ANffAN@ANANH@ANHAO@AOAO\)@f@AO\)AO@yAOAO @AO AP{@AP{APQ@nAPQAP\@AP\AP@ APAQ =@{xAQ =AQG@w`AQGAQ@s~AQAQ@otAQAR@kARAR=q@hAR=qARz@d=ARzARR@ajARRAR@^xvARAS33@[AS33ASp@Y ASpAS@VASAS@TQASAT(@R "AT(ATff@OqATffAT@MATATH@KvUATHAU@IF(AUAU\)@G AU\)AU@DuAUAU @B`&AU AV{@?UAV{AVQ@=CAVQAV\@:PAV\AV@7AVAW =@5*AW =AWG@2d,AWGAW@/~AWAW@,AWAX@))AXAX=q@&LAX=qAXz@#AXzAXR@ oAXRAX@)AXAY33@ʁAY33AYp@PAYpAY@AYAY@KAYAZ(@ \AZ(AZff@ _AZffAZ@ oAZAZH@*AZHA[@1A[A[\)?VA[\)A[?PA[A[ ? A[ A\{?A\{A\Q?2dA\QA\\?A\\A\?)OA\A] =?XA] =A]G?pA]GA]?ٕ A]A]?3A]A^?_]A^A^=q?*A^=qA^z?ѧA^zA^R?A^RA^?nA^A_33? A_33A_p?mA_pA_? !A_A_?1A_A`(?A`(A`ff?A`ffA`?A`A`H??A`HAa?oAaAa\)?sAa\)Aa?9AaAa ?Aa Ab{?Ab{AbQ?bJAbQAb\?Ab\Ab?uAbAc =?"&Ac =AcG?_AcGAc?U*At\At?;BAtAu =?9Au =AuG?7GAuGAu?4AuAu?2AuAv?0?AvAv=q?.Av=qAvz?,AvzAvR?*=AvRAv?)*>AvAw33?'Aw33Awp?&lAwpAw?%SBAwAw?$PUAwAx(?#_Ax(Axff?"lAxffAx?! AxAxH? AxHAy? %AyAy\)?kDAy\)Ay?AyAy ?Ay Az{?GAz{AzQ?AzQAz\?UAz\Az?0AzA{ =?0+A{ =A{G?NA{GA{?`A{A{?^wA{A|?HA|A|=q?!WA|=qA|z?UA|zA|R?A|RA|?VA|A}33?A}33A}p?A}pA}? ;A}A}? A}A~(? lwA~(A~ff? A~ffA~?A~A~H?BA~HA?AA\)?A\)A?WAA ?A A =>