Basics
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 Unit   Type   Summary
 
 System   AnsiChar   A character type guaranteed to be 8 bits in size
 System   AnsiString   A data type that holds a string of AnsiChars
 System   Boolean   Allows just True and False values
 System   Byte   An integer type supporting values 0 to 255
 System   Cardinal   The basic unsigned integer type
 System   Char   Variable type holding a single character
 System   Comp   A 64 bit signed integer
 System   Currency   A decimal type with 4 decimal points used for financial values
 System   Double   A floating point type supporting about 15 digits of precision
 System   Extended   The floating point type with the highest capacity and precision
 System   Int64   A 64 bit sized integer - the largest in Delphi
 System   Integer   The basic Integer type
 System   LongInt   An Integer whose size is guaranteed to be 32 bits
 System   LongWord   A 32 bit unsigned integer
 System   PAnsiChar   A pointer to an AnsiChar value
 System   PAnsiString   Pointer to an AnsiString value
 System   PChar   A pointer to an Char value
 System   PCurrency   Pointer to a Currency value
 System   PDateTime   Pointer to a TDateTime value
 System   PExtended   Pointer to a Extended floating point value
 System   PInt64   Pointer to an Int64 value
 System   Pointer   Defines a general use Pointer to any memory based data
 System   PShortString   A pointer to an ShortString value
 System   PString   Pointer to a String value
 System   PVariant   Pointer to a Variant value
 System   PWideChar   Pointer to a WideChar
 System   PWideString   Pointer to a WideString value
 System   Real   A floating point type supporting about 15 digits of precision
 System   Real48   The floating point type with the highest capacity and precision
 System   ShortInt   An integer type supporting values -128 to 127
 System   ShortString   Defines a string of up to 255 characters
 System   Single   The smallest capacity and precision floating point type
 System   SmallInt   An Integer type supporting values from -32768 to 32767
 System   String   A data type that holds a string of characters
 Classes   TBits   An object that can hold an infinite number of Boolean values
 ConvUtils   TConvType   Defines a measurement type as used by Convert
 System   TDateTime   Data type holding a date and time value
 System   Text   Defines a file as a text file
 System   TextFile   Declares a file type for storing lines of text
 SysUtils   TFloatFormat   Formats for use in floating point number display functions
 SysUtils   TFormatSettings   A record for holding locale values for thread-safe functions
 Classes   TList   General purpose container of a list of objects
 System   TObject   The base class type that is ancestor to all other classes
 Dialogs   TOpenDialog   Displays a file selection dialog
 Types   TPoint   Holds X and Y integer values
 Dialogs   TPrintDialog   Class that creates a printer selection and control dialog
 Types   TRect   Holds rectangle coordinate values
 SysUtils   TReplaceFlags   Defines options for the StringReplace routine
 Dialogs   TSaveDialog   Displays a dialog for selecting a save file name
 SysUtils   TSearchRec   Record used to hold data for FindFirst and FindNext
 Classes   TStringList   Holds a variable length list of strings
 SysUtils   TSysCharSet   Characters used by supplied string parsing functions
 System   TThreadFunc   Defines the function to be called by BeginThread
 System   Variant   A variable type that can hold changing data types
 System   WideChar   Variable type holding a single International character
 System   WideString   A data type that holds a string of WideChars
 System   Word   An integer type supporting values 0 to 65535
 
 
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