CATEGORY_CUBE
	CUBEKPIMEMBER           ***  Not yet Implemented
	CUBEMEMBER              ***  Not yet Implemented
	CUBEMEMBERPROPERTY      ***  Not yet Implemented
	CUBERANKEDMEMBER        ***  Not yet Implemented
	CUBESET                 ***  Not yet Implemented
	CUBESETCOUNT            ***  Not yet Implemented
	CUBEVALUE               ***  Not yet Implemented

CATEGORY_DATABASE
	DAVERAGE                PHPExcel_Calculation_Database::DAVERAGE
	DCOUNT                  PHPExcel_Calculation_Database::DCOUNT
	DCOUNTA                 PHPExcel_Calculation_Database::DCOUNTA
	DGET                    PHPExcel_Calculation_Database::DGET
	DMAX                    PHPExcel_Calculation_Database::DMAX
	DMIN                    PHPExcel_Calculation_Database::DMIN
	DPRODUCT                PHPExcel_Calculation_Database::DPRODUCT
	DSTDEV                  PHPExcel_Calculation_Database::DSTDEV
	DSTDEVP                 PHPExcel_Calculation_Database::DSTDEVP
	DSUM                    PHPExcel_Calculation_Database::DSUM
	DVAR                    PHPExcel_Calculation_Database::DVAR
	DVARP                   PHPExcel_Calculation_Database::DVARP

CATEGORY_DATE_AND_TIME
	DATE                    PHPExcel_Calculation_DateTime::DATE
	DATEDIF                 PHPExcel_Calculation_DateTime::DATEDIF
	DATEVALUE               PHPExcel_Calculation_DateTime::DATEVALUE
	DAY                     PHPExcel_Calculation_DateTime::DAYOFMONTH
	DAYS360                 PHPExcel_Calculation_DateTime::DAYS360
	EDATE                   PHPExcel_Calculation_DateTime::EDATE
	EOMONTH                 PHPExcel_Calculation_DateTime::EOMONTH
	HOUR                    PHPExcel_Calculation_DateTime::HOUROFDAY
	MINUTE                  PHPExcel_Calculation_DateTime::MINUTEOFHOUR
	MONTH                   PHPExcel_Calculation_DateTime::MONTHOFYEAR
	NETWORKDAYS             PHPExcel_Calculation_DateTime::NETWORKDAYS
	NOW                     PHPExcel_Calculation_DateTime::DATETIMENOW
	SECOND                  PHPExcel_Calculation_DateTime::SECONDOFMINUTE
	TIME                    PHPExcel_Calculation_DateTime::TIME
	TIMEVALUE               PHPExcel_Calculation_DateTime::TIMEVALUE
	TODAY                   PHPExcel_Calculation_DateTime::DATENOW
	WEEKDAY                 PHPExcel_Calculation_DateTime::DAYOFWEEK
	WEEKNUM                 PHPExcel_Calculation_DateTime::WEEKOFYEAR
	WORKDAY                 PHPExcel_Calculation_DateTime::WORKDAY
	YEAR                    PHPExcel_Calculation_DateTime::YEAR
	YEARFRAC                PHPExcel_Calculation_DateTime::YEARFRAC

CATEGORY_ENGINEERING
	BESSELI                 PHPExcel_Calculation_Engineering::BESSELI
	BESSELJ                 PHPExcel_Calculation_Engineering::BESSELJ
	BESSELK                 PHPExcel_Calculation_Engineering::BESSELK
	BESSELY                 PHPExcel_Calculation_Engineering::BESSELY
	BIN2DEC                 PHPExcel_Calculation_Engineering::BINTODEC
	BIN2HEX                 PHPExcel_Calculation_Engineering::BINTOHEX
	BIN2OCT                 PHPExcel_Calculation_Engineering::BINTOOCT
	COMPLEX                 PHPExcel_Calculation_Engineering::COMPLEX
	CONVERT                 PHPExcel_Calculation_Engineering::CONVERTUOM
	DEC2BIN                 PHPExcel_Calculation_Engineering::DECTOBIN
	DEC2HEX                 PHPExcel_Calculation_Engineering::DECTOHEX
	DEC2OCT                 PHPExcel_Calculation_Engineering::DECTOOCT
	DELTA                   PHPExcel_Calculation_Engineering::DELTA
	ERF                     PHPExcel_Calculation_Engineering::ERF
	ERFC                    PHPExcel_Calculation_Engineering::ERFC
	GESTEP                  PHPExcel_Calculation_Engineering::GESTEP
	HEX2BIN                 PHPExcel_Calculation_Engineering::HEXTOBIN
	HEX2DEC                 PHPExcel_Calculation_Engineering::HEXTODEC
	HEX2OCT                 PHPExcel_Calculation_Engineering::HEXTOOCT
	IMABS                   PHPExcel_Calculation_Engineering::IMABS
	IMAGINARY               PHPExcel_Calculation_Engineering::IMAGINARY
	IMARGUMENT              PHPExcel_Calculation_Engineering::IMARGUMENT
	IMCONJUGATE             PHPExcel_Calculation_Engineering::IMCONJUGATE
	IMCOS                   PHPExcel_Calculation_Engineering::IMCOS
	IMDIV                   PHPExcel_Calculation_Engineering::IMDIV
	IMEXP                   PHPExcel_Calculation_Engineering::IMEXP
	IMLN                    PHPExcel_Calculation_Engineering::IMLN
	IMLOG10                 PHPExcel_Calculation_Engineering::IMLOG10
	IMLOG2                  PHPExcel_Calculation_Engineering::IMLOG2
	IMPOWER                 PHPExcel_Calculation_Engineering::IMPOWER
	IMPRODUCT               PHPExcel_Calculation_Engineering::IMPRODUCT
	IMREAL                  PHPExcel_Calculation_Engineering::IMREAL
	IMSIN                   PHPExcel_Calculation_Engineering::IMSIN
	IMSQRT                  PHPExcel_Calculation_Engineering::IMSQRT
	IMSUB                   PHPExcel_Calculation_Engineering::IMSUB
	IMSUM                   PHPExcel_Calculation_Engineering::IMSUM
	OCT2BIN                 PHPExcel_Calculation_Engineering::OCTTOBIN
	OCT2DEC                 PHPExcel_Calculation_Engineering::OCTTODEC
	OCT2HEX                 PHPExcel_Calculation_Engineering::OCTTOHEX

CATEGORY_FINANCIAL
	ACCRINT                 PHPExcel_Calculation_Financial::ACCRINT
	ACCRINTM                PHPExcel_Calculation_Financial::ACCRINTM
	AMORDEGRC               PHPExcel_Calculation_Financial::AMORDEGRC
	AMORLINC                PHPExcel_Calculation_Financial::AMORLINC
	COUPDAYBS               PHPExcel_Calculation_Financial::COUPDAYBS
	COUPDAYS                PHPExcel_Calculation_Financial::COUPDAYS
	COUPDAYSNC              PHPExcel_Calculation_Financial::COUPDAYSNC
	COUPNCD                 PHPExcel_Calculation_Financial::COUPNCD
	COUPNUM                 PHPExcel_Calculation_Financial::COUPNUM
	COUPPCD                 PHPExcel_Calculation_Financial::COUPPCD
	CUMIPMT                 PHPExcel_Calculation_Financial::CUMIPMT
	CUMPRINC                PHPExcel_Calculation_Financial::CUMPRINC
	DB                      PHPExcel_Calculation_Financial::DB
	DDB                     PHPExcel_Calculation_Financial::DDB
	DISC                    PHPExcel_Calculation_Financial::DISC
	DOLLARDE                PHPExcel_Calculation_Financial::DOLLARDE
	DOLLARFR                PHPExcel_Calculation_Financial::DOLLARFR
	DURATION                ***  Not yet Implemented
	EFFECT                  PHPExcel_Calculation_Financial::EFFECT
	FV                      PHPExcel_Calculation_Financial::FV
	FVSCHEDULE              PHPExcel_Calculation_Financial::FVSCHEDULE
	INTRATE                 PHPExcel_Calculation_Financial::INTRATE
	IPMT                    PHPExcel_Calculation_Financial::IPMT
	IRR                     PHPExcel_Calculation_Financial::IRR
	ISPMT                   PHPExcel_Calculation_Financial::ISPMT
	MDURATION               ***  Not yet Implemented
	MIRR                    PHPExcel_Calculation_Financial::MIRR
	NOMINAL                 PHPExcel_Calculation_Financial::NOMINAL
	NPER                    PHPExcel_Calculation_Financial::NPER
	NPV                     PHPExcel_Calculation_Financial::NPV
	ODDFPRICE               ***  Not yet Implemented
	ODDFYIELD               ***  Not yet Implemented
	ODDLPRICE               ***  Not yet Implemented
	ODDLYIELD               ***  Not yet Implemented
	PMT                     PHPExcel_Calculation_Financial::PMT
	PPMT                    PHPExcel_Calculation_Financial::PPMT
	PRICE                   PHPExcel_Calculation_Financial::PRICE
	PRICEDISC               PHPExcel_Calculation_Financial::PRICEDISC
	PRICEMAT                PHPExcel_Calculation_Financial::PRICEMAT
	PV                      PHPExcel_Calculation_Financial::PV
	RATE                    PHPExcel_Calculation_Financial::RATE
	RECEIVED                PHPExcel_Calculation_Financial::RECEIVED
	SLN                     PHPExcel_Calculation_Financial::SLN
	SYD                     PHPExcel_Calculation_Financial::SYD
	TBILLEQ                 PHPExcel_Calculation_Financial::TBILLEQ
	TBILLPRICE              PHPExcel_Calculation_Financial::TBILLPRICE
	TBILLYIELD              PHPExcel_Calculation_Financial::TBILLYIELD
	USDOLLAR                ***  Not yet Implemented
	VDB                     ***  Not yet Implemented
	XIRR                    PHPExcel_Calculation_Financial::XIRR
	XNPV                    PHPExcel_Calculation_Financial::XNPV
	YIELD                   ***  Not yet Implemented
	YIELDDISC               PHPExcel_Calculation_Financial::YIELDDISC
	YIELDMAT                PHPExcel_Calculation_Financial::YIELDMAT

CATEGORY_INFORMATION
	CELL                    ***  Not yet Implemented
	ERROR.TYPE              PHPExcel_Calculation_Functions::ERROR_TYPE
	INFO                    ***  Not yet Implemented
	ISBLANK                 PHPExcel_Calculation_Functions::IS_BLANK
	ISERR                   PHPExcel_Calculation_Functions::IS_ERR
	ISERROR                 PHPExcel_Calculation_Functions::IS_ERROR
	ISEVEN                  PHPExcel_Calculation_Functions::IS_EVEN
	ISLOGICAL               PHPExcel_Calculation_Functions::IS_LOGICAL
	ISNA                    PHPExcel_Calculation_Functions::IS_NA
	ISNONTEXT               PHPExcel_Calculation_Functions::IS_NONTEXT
	ISNUMBER                PHPExcel_Calculation_Functions::IS_NUMBER
	ISODD                   PHPExcel_Calculation_Functions::IS_ODD
	ISREF                   ***  Not yet Implemented
	ISTEXT                  PHPExcel_Calculation_Functions::IS_TEXT
	N                       PHPExcel_Calculation_Functions::N
	NA                      PHPExcel_Calculation_Functions::NA
	TYPE                    PHPExcel_Calculation_Functions::TYPE
	VERSION                 PHPExcel_Calculation_Functions::VERSION

CATEGORY_LOGICAL
	AND                     PHPExcel_Calculation_Logical::LOGICAL_AND
	FALSE                   PHPExcel_Calculation_Logical::FALSE
	IF                      PHPExcel_Calculation_Logical::STATEMENT_IF
	IFERROR                 PHPExcel_Calculation_Logical::IFERROR
	NOT                     PHPExcel_Calculation_Logical::NOT
	OR                      PHPExcel_Calculation_Logical::LOGICAL_OR
	TRUE                    PHPExcel_Calculation_Logical::TRUE

CATEGORY_LOOKUP_AND_REFERENCE
	ADDRESS                 PHPExcel_Calculation_LookupRef::CELL_ADDRESS
	AREAS                   ***  Not yet Implemented
	CHOOSE                  PHPExcel_Calculation_LookupRef::CHOOSE
	COLUMN                  PHPExcel_Calculation_LookupRef::COLUMN
	COLUMNS                 PHPExcel_Calculation_LookupRef::COLUMNS
	GETPIVOTDATA            ***  Not yet Implemented
	HLOOKUP                 PHPExcel_Calculation_LookupRef::HLOOKUP
	HYPERLINK               PHPExcel_Calculation_LookupRef::HYPERLINK
	INDEX                   PHPExcel_Calculation_LookupRef::INDEX
	INDIRECT                PHPExcel_Calculation_LookupRef::INDIRECT
	LOOKUP                  PHPExcel_Calculation_LookupRef::LOOKUP
	MATCH                   PHPExcel_Calculation_LookupRef::MATCH
	OFFSET                  PHPExcel_Calculation_LookupRef::OFFSET
	ROW                     PHPExcel_Calculation_LookupRef::ROW
	ROWS                    PHPExcel_Calculation_LookupRef::ROWS
	RTD                     ***  Not yet Implemented
	TRANSPOSE               PHPExcel_Calculation_LookupRef::TRANSPOSE
	VLOOKUP                 PHPExcel_Calculation_LookupRef::VLOOKUP

CATEGORY_MATH_AND_TRIG
	ABS                     abs
	ACOS                    acos
	ACOSH                   acosh
	ASIN                    asin
	ASINH                   asinh
	ATAN                    atan
	ATAN2                   PHPExcel_Calculation_MathTrig::REVERSE_ATAN2
	ATANH                   atanh
	CEILING                 PHPExcel_Calculation_MathTrig::CEILING
	COMBIN                  PHPExcel_Calculation_MathTrig::COMBIN
	COS                     cos
	COSH                    cosh
	DEGREES                 rad2deg
	EVEN                    PHPExcel_Calculation_MathTrig::EVEN
	EXP                     exp
	FACT                    PHPExcel_Calculation_MathTrig::FACT
	FACTDOUBLE              PHPExcel_Calculation_MathTrig::FACTDOUBLE
	FLOOR                   PHPExcel_Calculation_MathTrig::FLOOR
	GCD                     PHPExcel_Calculation_MathTrig::GCD
	INT                     PHPExcel_Calculation_MathTrig::INT
	LCM                     PHPExcel_Calculation_MathTrig::LCM
	LN                      log
	LOG                     PHPExcel_Calculation_MathTrig::LOG_BASE
	LOG10                   log10
	MDETERM                 PHPExcel_Calculation_MathTrig::MDETERM
	MINVERSE                PHPExcel_Calculation_MathTrig::MINVERSE
	MMULT                   PHPExcel_Calculation_MathTrig::MMULT
	MOD                     PHPExcel_Calculation_MathTrig::MOD
	MROUND                  PHPExcel_Calculation_MathTrig::MROUND
	MULTINOMIAL             PHPExcel_Calculation_MathTrig::MULTINOMIAL
	ODD                     PHPExcel_Calculation_MathTrig::ODD
	PI                      pi
	POWER                   PHPExcel_Calculation_MathTrig::POWER
	PRODUCT                 PHPExcel_Calculation_MathTrig::PRODUCT
	QUOTIENT                PHPExcel_Calculation_MathTrig::QUOTIENT
	RADIANS                 deg2rad
	RAND                    PHPExcel_Calculation_MathTrig::RAND
	RANDBETWEEN             PHPExcel_Calculation_MathTrig::RAND
	ROMAN                   PHPExcel_Calculation_MathTrig::ROMAN
	ROUND                   round
	ROUNDDOWN               PHPExcel_Calculation_MathTrig::ROUNDDOWN
	ROUNDUP                 PHPExcel_Calculation_MathTrig::ROUNDUP
	SERIESSUM               PHPExcel_Calculation_MathTrig::SERIESSUM
	SIGN                    PHPExcel_Calculation_MathTrig::SIGN
	SIN                     sin
	SINH                    sinh
	SQRT                    sqrt
	SQRTPI                  PHPExcel_Calculation_MathTrig::SQRTPI
	SUBTOTAL                PHPExcel_Calculation_MathTrig::SUBTOTAL
	SUM                     PHPExcel_Calculation_MathTrig::SUM
	SUMIF                   PHPExcel_Calculation_MathTrig::SUMIF
	SUMIFS                  ***  Not yet Implemented
	SUMPRODUCT              PHPExcel_Calculation_MathTrig::SUMPRODUCT
	SUMSQ                   PHPExcel_Calculation_MathTrig::SUMSQ
	SUMX2MY2                PHPExcel_Calculation_MathTrig::SUMX2MY2
	SUMX2PY2                PHPExcel_Calculation_MathTrig::SUMX2PY2
	SUMXMY2                 PHPExcel_Calculation_MathTrig::SUMXMY2
	TAN                     tan
	TANH                    tanh
	TRUNC                   PHPExcel_Calculation_MathTrig::TRUNC

CATEGORY_STATISTICAL
	AVEDEV                  PHPExcel_Calculation_Statistical::AVEDEV
	AVERAGE                 PHPExcel_Calculation_Statistical::AVERAGE
	AVERAGEA                PHPExcel_Calculation_Statistical::AVERAGEA
	AVERAGEIF               PHPExcel_Calculation_Statistical::AVERAGEIF
	AVERAGEIFS              ***  Not yet Implemented
	BETADIST                PHPExcel_Calculation_Statistical::BETADIST
	BETAINV                 PHPExcel_Calculation_Statistical::BETAINV
	BINOMDIST               PHPExcel_Calculation_Statistical::BINOMDIST
	CHIDIST                 PHPExcel_Calculation_Statistical::CHIDIST
	CHIINV                  PHPExcel_Calculation_Statistical::CHIINV
	CHITEST                 ***  Not yet Implemented
	CONFIDENCE              PHPExcel_Calculation_Statistical::CONFIDENCE
	CORREL                  PHPExcel_Calculation_Statistical::CORREL
	COUNT                   PHPExcel_Calculation_Statistical::COUNT
	COUNTA                  PHPExcel_Calculation_Statistical::COUNTA
	COUNTBLANK              PHPExcel_Calculation_Statistical::COUNTBLANK
	COUNTIF                 PHPExcel_Calculation_Statistical::COUNTIF
	COUNTIFS                ***  Not yet Implemented
	COVAR                   PHPExcel_Calculation_Statistical::COVAR
	CRITBINOM               PHPExcel_Calculation_Statistical::CRITBINOM
	DEVSQ                   PHPExcel_Calculation_Statistical::DEVSQ
	EXPONDIST               PHPExcel_Calculation_Statistical::EXPONDIST
	FDIST                   ***  Not yet Implemented
	FINV                    ***  Not yet Implemented
	FISHER                  PHPExcel_Calculation_Statistical::FISHER
	FISHERINV               PHPExcel_Calculation_Statistical::FISHERINV
	FORECAST                PHPExcel_Calculation_Statistical::FORECAST
	FREQUENCY               ***  Not yet Implemented
	FTEST                   ***  Not yet Implemented
	GAMMADIST               PHPExcel_Calculation_Statistical::GAMMADIST
	GAMMAINV                PHPExcel_Calculation_Statistical::GAMMAINV
	GAMMALN                 PHPExcel_Calculation_Statistical::GAMMALN
	GEOMEAN                 PHPExcel_Calculation_Statistical::GEOMEAN
	GROWTH                  PHPExcel_Calculation_Statistical::GROWTH
	HARMEAN                 PHPExcel_Calculation_Statistical::HARMEAN
	HYPGEOMDIST             PHPExcel_Calculation_Statistical::HYPGEOMDIST
	INTERCEPT               PHPExcel_Calculation_Statistical::INTERCEPT
	KURT                    PHPExcel_Calculation_Statistical::KURT
	LARGE                   PHPExcel_Calculation_Statistical::LARGE
	LINEST                  PHPExcel_Calculation_Statistical::LINEST
	LOGEST                  PHPExcel_Calculation_Statistical::LOGEST
	LOGINV                  PHPExcel_Calculation_Statistical::LOGINV
	LOGNORMDIST             PHPExcel_Calculation_Statistical::LOGNORMDIST
	MAX                     PHPExcel_Calculation_Statistical::MAX
	MAXA                    PHPExcel_Calculation_Statistical::MAXA
	MAXIF                   PHPExcel_Calculation_Statistical::MAXIF
	MEDIAN                  PHPExcel_Calculation_Statistical::MEDIAN
	MEDIANIF                ***  Not yet Implemented
	MIN                     PHPExcel_Calculation_Statistical::MIN
	MINA                    PHPExcel_Calculation_Statistical::MINA
	MINIF                   PHPExcel_Calculation_Statistical::MINIF
	MODE                    PHPExcel_Calculation_Statistical::MODE
	NEGBINOMDIST            PHPExcel_Calculation_Statistical::NEGBINOMDIST
	NORMDIST                PHPExcel_Calculation_Statistical::NORMDIST
	NORMINV                 PHPExcel_Calculation_Statistical::NORMINV
	NORMSDIST               PHPExcel_Calculation_Statistical::NORMSDIST
	NORMSINV                PHPExcel_Calculation_Statistical::NORMSINV
	PEARSON                 PHPExcel_Calculation_Statistical::CORREL
	PERCENTILE              PHPExcel_Calculation_Statistical::PERCENTILE
	PERCENTRANK             PHPExcel_Calculation_Statistical::PERCENTRANK
	PERMUT                  PHPExcel_Calculation_Statistical::PERMUT
	POISSON                 PHPExcel_Calculation_Statistical::POISSON
	PROB                    ***  Not yet Implemented
	QUARTILE                PHPExcel_Calculation_Statistical::QUARTILE
	RANK                    PHPExcel_Calculation_Statistical::RANK
	RSQ                     PHPExcel_Calculation_Statistical::RSQ
	SKEW                    PHPExcel_Calculation_Statistical::SKEW
	SLOPE                   PHPExcel_Calculation_Statistical::SLOPE
	SMALL                   PHPExcel_Calculation_Statistical::SMALL
	STANDARDIZE             PHPExcel_Calculation_Statistical::STANDARDIZE
	STDEV                   PHPExcel_Calculation_Statistical::STDEV
	STDEVA                  PHPExcel_Calculation_Statistical::STDEVA
	STDEVP                  PHPExcel_Calculation_Statistical::STDEVP
	STDEVPA                 PHPExcel_Calculation_Statistical::STDEVPA
	STEYX                   PHPExcel_Calculation_Statistical::STEYX
	TDIST                   PHPExcel_Calculation_Statistical::TDIST
	TINV                    PHPExcel_Calculation_Statistical::TINV
	TREND                   PHPExcel_Calculation_Statistical::TREND
	TRIMMEAN                PHPExcel_Calculation_Statistical::TRIMMEAN
	TTEST                   ***  Not yet Implemented
	VAR                     PHPExcel_Calculation_Statistical::VARFunc
	VARA                    PHPExcel_Calculation_Statistical::VARA
	VARP                    PHPExcel_Calculation_Statistical::VARP
	VARPA                   PHPExcel_Calculation_Statistical::VARPA
	WEIBULL                 PHPExcel_Calculation_Statistical::WEIBULL
	ZTEST                   PHPExcel_Calculation_Statistical::ZTEST

CATEGORY_TEXT_AND_DATA
	ASC                     ***  Not yet Implemented
	BAHTTEXT                ***  Not yet Implemented
	CHAR                    PHPExcel_Calculation_TextData::CHARACTER
	CLEAN                   PHPExcel_Calculation_TextData::TRIMNONPRINTABLE
	CODE                    PHPExcel_Calculation_TextData::ASCIICODE
	CONCATENATE             PHPExcel_Calculation_TextData::CONCATENATE
	DOLLAR                  PHPExcel_Calculation_TextData::DOLLAR
	EXACT                   ***  Not yet Implemented
	FIND                    PHPExcel_Calculation_TextData::SEARCHSENSITIVE
	FINDB                   PHPExcel_Calculation_TextData::SEARCHSENSITIVE
	FIXED                   PHPExcel_Calculation_TextData::FIXEDFORMAT
	JIS                     ***  Not yet Implemented
	LEFT                    PHPExcel_Calculation_TextData::LEFT
	LEFTB                   PHPExcel_Calculation_TextData::LEFT
	LEN                     PHPExcel_Calculation_TextData::STRINGLENGTH
	LENB                    PHPExcel_Calculation_TextData::STRINGLENGTH
	LOWER                   PHPExcel_Calculation_TextData::LOWERCASE
	MID                     PHPExcel_Calculation_TextData::MID
	MIDB                    PHPExcel_Calculation_TextData::MID
	PHONETIC                ***  Not yet Implemented
	PROPER                  PHPExcel_Calculation_TextData::PROPERCASE
	REPLACE                 PHPExcel_Calculation_TextData::REPLACE
	REPLACEB                PHPExcel_Calculation_TextData::REPLACE
	REPT                    str_repeat
	RIGHT                   PHPExcel_Calculation_TextData::RIGHT
	RIGHTB                  PHPExcel_Calculation_TextData::RIGHT
	SEARCH                  PHPExcel_Calculation_TextData::SEARCHINSENSITIVE
	SEARCHB                 PHPExcel_Calculation_TextData::SEARCHINSENSITIVE
	SUBSTITUTE              PHPExcel_Calculation_TextData::SUBSTITUTE
	T                       PHPExcel_Calculation_TextData::RETURNSTRING
	TEXT                    PHPExcel_Calculation_TextData::TEXTFORMAT
	TRIM                    PHPExcel_Calculation_TextData::TRIMSPACES
	UPPER                   PHPExcel_Calculation_TextData::UPPERCASE
	VALUE                   ***  Not yet Implemented
