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• ElapTime(<cStartTime>, <cEndTime>) ➜ cDiference
  returns a time-formatted character string holding the duration of the time interval in the format hh:mm:ss.

• Empty(<exp>) ➜ lEmpty
  returns .T. when the passed value is empty, otherwise .F.

• Eof() ➜ lIsEndOfFile
  returns .T. when the record pointer in a work area has reached the end of file, otherwise .F.
  NOTE: Eof() is always .T. when a database has no records, and is always .F. when there is no work area in use.

• EoM([<dDate>]) ➜ dDateEndOfMonth
  returns the last day of a given month date.

• EoY([<dDate>]) ➜ dDateEndOfYear
  returns the last date of a given year date.

• ErrorBlock([<bErrorHandler>]) ➜ bCurrentErrorHandler
  returns the current error handling code block and optionally sets a new <bErrorHandler> to be executed whenever a runtime error occurs. When evaluated, the <bErrorHandler> is passed an error object as an argument by the system.

• ErrorLevel([<nNewReturnCode>]) ➜ nCurrentReturnCode
  returns and optionally sets the current exit code as a numeric value. It returns zero if no exit code has been set.

• Eval(<bBlock>, [<BlockArg list>]) ➜ LastBlockValue
  Evaluates a code block and returns the resulting value of the last expression within the block. Returned value can be of any type. <bBlock> is the code block to be evaluated, while <BlockArg list> is an optional list of arguments to send to the code block before it is evaluated.

• Exp(<nExponent>) ➜ nAntilogarithm
  returns a numeric value that is equivalent to the value of e raised to the specified power. The maximum value of <nExponent> is 46 otherwise a numeric overflow occurs. It's the inverse function of 'LOG()'.

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