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[amibroker] AmiBroker 4.29.0 BETA released



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Hello, A new beta version of AmiBroker - 4.29.0 
is availablefor download from the following 
locations: <A 
href=""><FONT 
size=2>http://www.amibroker.com/bin/ab4290beta.exe<A 
href=""><FONT 
size=2>http://www.amibroker.net/bin/ab4290beta.exe<A 
href=""><FONT 
size=2>ftp://ftp.amibroker.com/pub/ab4290beta.exe<A 
href=""><FONT 
size=2>ftp://ftp.amibroker.net/pub/ab4290beta.exe<FONT 
size=2> (1500 KB self-extracting archive)
 
Please read the README file below for the list of 
changes.
Best regards,Tomasz 
Janeczkoamibroker.com
 
 

AmiBroker 4.29.0 Beta Read Me
February 11, 2003 15:26 
THIS IS A BETA VERSION OF THE SOFTWARE. EXPECT BUGS. 
Backup your data files and entire AmiBroker folder 
first!
INSTALLATION INSTRUCTIONS
IMPORTANT: This archive is update-only. You have to install full 
version 4.20 first. 
Just run the installer and follow the instructions. 
Then run AmiBroker. You should see "AmiBroker 4.29.0 beta" written in the 
About box.
CHANGES FOR VERSION 
4.29.0 (as compared to 4.28.1)
  context help in AFL editor - just press F1 when cursor is over AFL 
  reserved function name and it will display full information about that 
  function 
  param info/fun reference available also from context menu 
  fixed bug in Study function working improperly for trendlines with right 
  extend property 
  tab order fixed in Study properties box 
  usability: "Filter pre/after hours" is available now from 
  View->Intraday menu 
  new AFL function:Now( format = 0 ) returns current date / time in 
  numerous of formats:format = 0 - returns string containing current 
  date/time formatted according to system settingsformat = 1 - returns 
  string containing current date only formatted according to system 
  settingsformat = 2 - returns string containing current time only formatted 
  according to system settingsformat = 3 - returns DATENUM number with 
  current dateformat = 4 - returns TIMENUM number with current 
  timeformat = 5 - returns DATETIME number with current date/timeSee: <A 
  href="">http://www.amibroker.com/guide/afl/afl_view.php?name=NOW 

  new drawing tool: Triangle 
  new drawing tool: Andrews' Pitchfork 
  Gann Square tool does not draw controlling trenline during move/resize 
  added check that prevents freeing memory by Equity(1) function when this 
  memory is referenced by other variables 
  added Layer combo to the Text properties box 
  added link to AFL on-line reference to the Help->AmiBroker on the Web 
  menu. 
  switching layers does not cause unnecessary symbol tree refresh 
  added switch to AA Settings->Report tab that allows to turn off 
  optimization warning (that is displayed if optimization requires more than 300 
  steps) 
  other minor fixes.
CHANGES FOR VERSION 
4.28.1 (as compared to 4.28.0)
  fixed problem with missing some short trades when new flag "Reverse entry 
  signal forces exit" was turned off 
  Null is now highlighted and present in the auto-complete box. 
  fixed numeric sorting of colorized columns 
CHANGES FOR VERSION 
4.28.0 (as compared to 4.27.1)
  ApplyStop has one more parameter ApplyStop( Type, Mode, Amount, 
  ExitAtStop, Volatile = False )new Volatile parameters decides if 
  amount (or distance) (3rd parameter) is sampled at the trade entry and remains 
  fixed during the trade (Volatile = FALSE - old behaviour) or if can vary 
  during the trade (Volatile = TRUE)Allows single-line implementation of 
  Chandeliers exit:ApplyStop(stopTypeTrailing, stopModePoint, 
  3*ATR(14), True, True );
  ApplyStop handles new N-Bar stop - exits the trade after N bars.Type = 
  stopTypeNBar; /* = 3 */Mode = stopModeBars; /* = 1 
  */ApplyStop( stopTypeNBar, stopModeBars, 5 ); // exits trades on 
  5th bar since entry
  added new "Reverse entry signal forces exit" check box to the Backtester 
  settings.When it is ON (the default setting) - backtester works as in 
  previous versions and closes already open positon if new entry signal in 
  reverse direction is encountered. If this switch is OFF - even if reverse 
  signal occurs backtester maintains currently open trade and does not close 
  positon until regular exit (sell or cover) signal is generated. In other 
  words when this switch is OFF backtester ignores Short signals during long 
  trades and ignores Buy signals during short trades.
  added "Allow same bar exit (single bar trade)" option to the 
  SettingsWhen it is ON (the default settings) - entry and exit at the very 
  same bar is allowed (as in previous versions)if it is OFF - exit can 
  happen starting from next bar only (this applies to regular signals,there is a 
  separate setting for ApplyStop-generated exits). Switching it to OFF allows to 
  reproduce the behaviour of MS backtester that is not able to handle same day 
  exits.
  long trades now take precedence over short trades so if signals happen on 
  the same bar in both directions only long trade is taken. 
  new AFL functions:DateTime() - returns array of encoded date/time 
  values suitable for using withAddColumn and formatDateTime constantto 
  produce date time formated according to your system 
  settingsAddColumn( DateTime(), "Date / Time", formatDateTime 
  );new formatChar constant allows outputting single ASCII 
  character codes:Example (produces signal file accepted by various 
  other 
  programs):Buy=Cross(MACD(),Signal());Sell=Cross(Signal(), 
  MACD());Filter=Buy OR Sell;SetOption("NoDefaultColumns", True 
  );AddColumn( DateTime(), "Date", formatDateTime );AddColumn( IIf( Buy, 
  66, 83 ), "Signal", formatChar ); 
  new AFL functions continued:BarIndex() - returns zero-based bar number 
  - the same as Cum(1)-1 but it is much faster than Cum(1) when used in 
  Indicators SetOption( "name", value )- sets various options in 
  automatic analysis settings currently available options 
  are"NoDefaultColumns" - if set to True - exploration does not have default 
  Ticker and Date/Time columns"InitialEquity""AllowSameBarExit" 
  "ActivateStopsImmediately" "AllowPositionShrinking" "FuturesMode" 
  "InterestRate"
  if you overwrite AA settings via SetTradeDelays/SetOption backtest 
  report gives these actual values instead of originaly set in the 
  settings
  new Null constant is equal to -1e10 (empty value) so you can use it 
  instead enigmatic -1e10obsolete styleLog removed (logarithmic scale 
  setting is not per-line but per-pane and it is selectable from Indicator 
  Builder)
  added PlotGrid( level, color = colorDefault ) function that plots grid 
  line using built-in dotted style.
  fixed problem with QuoteEditor that was introduced with adding color 
  support to the list view 
  added support for Win XP common controls 6, which results in enhanced 
  XP-look (on WinXP only of course) 
  fixed zero-size problem with floating control bars on Windows XP 
  fixed some compatibility issues with common controls 6. 
  added sound when plugin status changes 
  fixed problems with Review window sometimes not showing the results 
  value label drawing changed slightly 
  status bar adjusted so plugin state is visible on smaller displays 
  improved windows version checking for bug reports
CHANGES FOR VERSION 
4.27.1 (as compared to 4.27.0)
  fixed problems with 
  auto-complete and param info features appearing on certain Windows 
  versions 
CHANGES FOR VERSION 
4.27.0 (as compared to 4.26.0)

  Intellisense-like functionality in AFL editor
  auto-completion feature in AFL editor type a few letters and press 
  Ctrl+SPACE and the number of matching functions / reserved words will be 
  displayed 
  parameters-info tip, type function name and opening brace ( and you will 
  see the tip that shows information about required parameters 
  two new checkboxes Preferences->Editor control Auto-completion / 
  parameter-info features 
  fixed exception occuring when optimizing systems that generate zero trades 
  (very rare case) 
  AlertIF called from the custom indicators sometimes displayed wrong 
  date/time - now it is fixed 
  when fixup = 1 Foreign() is able to align array past the last foreign bar. 
  For example when using intraday data you can refer to imported EOD data and it 
  will fill intraday data with last value from previous day.
CHANGES FOR VERSION 
4.26.0 (as compared to 4.25.0)
  List view sorting speed increased significantly: 
  
    sorting of text columns is 2 times faster (on average) 
    sorting of numeric column is 5-10 times faster ( sort 660'000 items 
    within 2-3 seconds on 1GHz machine) 
  Explorations now support definable color of cell text and 
  backgroundAddColumn and AddTextColumn functions extended to support this 
  feature:AddColumn( Array, "Title", format = 1.2, textColor = 
  colorDefault, bkgndColor = colorDefault );AddTextColumn( "Text", "Title", 
  format = 1.2, textColor = colorDefault, bkgndColor = colorDefault 
  );New colorDefault constant (-1) defines default windows color for 
  grid cell. 
  Sample code:Filter =1;
  AddColumn( Close, "Close", 1.2 );AddColumn( MACD(), "MACD", 1.4 , 
  IIf( MACD() > 0, colorGreen, colorRed ) );AddTextColumn( FullName(), 
  "Full name", 77 , colorDefault, IIf( Close < 10, colorLightBlue, 
  colorDefault ) );
  
  custom indicators - anchors are not offset vertically from the ends of the 
  trend line when Draw dates is selected
  
  custom indicators with auto-scaling can be now dragged in Y-direction like 
  regular charts
  
  Foreign and RelStrength algorithm improved to allow more complex alignment 
  cases
  PlotShapes works even without any Plot statement (although it is intended 
  to use in conjunction with Plot) 
  fixed line disappearing bug that occured when using text tool right after 
  trend line tool 
  Dec is displayed again on date axis 

CHANGES FOR VERSION 
4.25.0 (as compared to 4.24.0)
  support user-definable parameters:new AFL functionsParam( "name", 
  default, min, max, step )ParamStr( "name", "default" );ParamColor( 
  "name", defaultcolor );new Parameters dialog : right click over chart 
  pane and select "Parameters" or press Ctrl+Rallows to change chart 
  parameters - changes are reflected immediatelly 
  Sample code 1:ticker = ParamStr( "Ticker", "MSFT" 
  );sp = Param( "MA Period", 12, 2, 100 );PlotForeign( ticker, "Chart of 
  "+ticker, ParamColor( "Price Color", colorLightYellow ), styleCandle 
  );Plot( MA( Foreign( ticker, "C" ), sp ), "MA(" + WriteVal( sp, 1.0 ) + 
  ")", ParamColor( "MA Color", colorRed ) );
  Sample code 2:sp = Param( "RSI Period", 12, 2, 100 
  );r = RSI( sp );Plot( r, "RSI("+WriteVal(sp,1.0)+")", ParamColor("RSI 
  Color", colorRed ) );
  Buy = Cross( r, 30 );Sell = Cross( 70, r );
  PlotShapes( shapeUpArrow * Buy + shapeDownArrow * Sell, IIf( Buy, 
  colorGreen, colorRed ) );
  added missing ':' and '"' characters to the forbidden characters set in 
  file names generated from ticker names. All file-system reserved characters 
  are converted to underscore. 
  ticker symbol maximum length increased to 25 characters (from previous 
  15).(these two fixes above solve problem with using very long symbols like 

  default keyboard accelerators changed Ctrl+R is now for Parameters dialog 
  F5 is for Refresh 
  fixed calculation bug occuring when drawing objects in the blank chart 
  area ("jumping" effect) 
  new method in Quotations collection for faster retrieval of quoteslong 
  Retrieve( long Count, Variant *Date, Variant *Open, Variant *High, Variant 
  *Low, Variant *Close, Variant *Volume, Variant *OpenInt ); 
  on Windows Me, 2000 and XP all file dialogs now feature "Places" bar and 
  allows to select few recent file names from the combo 
  date axis display modified slightly (3 letter month abbrev. used more 
  often 
  changed resizing algorithm so if "no min size for resizing dialog" option 
  is selected the scroll bar of list / edit is always visible. Also the option 
  is active from the start without need to go to Preferences. 
  other minor improvements
CHANGES FOR VERSION 
4.24.0 (as compared to 4.23.0)
  saving/loading Automatic Analysis settings to/from the file 
  Axis font now can be made bold/italic/underline 
  Text drawing tool uses axis font now 
  full control over AA window via new OLE/COM interface:Analysis 
  object (accessible via 
  Broker.Application.Analysis)Methods:- Backtest(); - runs 
  backtest - Explore(); - runs exploration- Scan(); - runs scan- 
  Optimize(); - runs optimization- bool Report( FileName: String ) - saves 
  report to the file or displays it if FileName = "" - bool Export( 
  FileName: String ) - exports result list to CSV file- bool LoadFormula( 
  FileName: String ) - loads AFL formula- bool SaveFormula( FileName: String 
  ) - saves AFL formula- bool LoadSettings( FileName: String ) - loads 
  backtest settings- bool SaveSettings( FileName: String ) - saves backtest 
  settings- ClearFilters() - removes all filters 
  Properties:- long ApplyTo - defines apply to mode: 0 - all 
  stocks, 1 - current stock, 2 - use filter- long RangeMode - defines range 
  mode: 0 - all quotes, 1 - n last quotes, 2 - n last days, 3 - from-to 
  date- long RangeN - defines N (number of bars/days to backtest)- DATE 
  RangeFromDate - defines "From" date- DATE RangeToDate - defines "To" 
  date- Filter( nType: short, Category : String ) - sets/retrieves filter 
  settingnType argument defines type of filter 0 - include, 1 - 
  excludeCategory argument defines filter category:"index", "favorite", 
  "market", "group", "sector", "index", 
  "watchlist"ExamplesClearFilters(); 
  // clear all filters firstFilter( 0, "index" ) = 1; // include only 
  indicesFilter( 1, "market" ) = 2; // exclude 2nd 
  marketFull Example for Windows Scripting 
  Host:======================================== 
  /* create AB object */AB = new 
  ActiveXObject("Broker.Application");
  /* retrieve automatic analysis object */AA = 
  AB.Analysis;
  /* load formula from external file 
  */AA.LoadFormula("afl\\macd_c.afl");
  /* optional: load settings */// 
  AA.LoadSettings("the_path_to_the_settings_file.abs");
  /* setup filters *//* backtest over symbols present 
  in market 0 only (zero-based number) */AA.ClearFilters(); AA.Filter( 
  0, "market" ) = 0;
  /* set apply to and range */AA.ApplyTo = 2; // use 
  filtersAA.RangeMode = 0; // use all available quotes
  /* run backtest and display report 
  */AA.Backtest();AA.Report(""); // empty file name means display 
  report
 
CHANGES FOR VERSION 
4.23.0 (as compared to 4.22.1)
  chart axis font can be defined by the user. The default is now Arial, 
  9pt.(Tools->Preferences->Miscellaneous: "Axis font") 
  Undo feature added to AFL editor. 
  PlotShapes now supports offset (or distance) parameter (by default -12 ), 
  Offset is expressed in SCREEN pixels.Negative offsets shift symbols down, 
  positive offsets shift symbol up. To place the shape exactly at ypostion, 
  specify 0 as offset. PlotShapes( shape, color, layer = 0, yposition = 
  graph0, offset = -12 ); 
  yet another bug fixed that caused problems with drawing lines when 
  multiple windows were showing same symbol but different intervals. 
  if Y-value is less than 1000 the status bar displays four decimal places , 
  also bar number is displayed in the status bar (next to date/time) 
  Insert Indicator window (Ctrl+I) does not show empty indicator slots 
  anymore.
CHANGES FOR VERSION 
4.22.1 (as compared to 4.22.0)
  fixed overwrite problem occuring when deleting first indicator in the list 
  in Indicator Builder 
  fixed shortcut conflict &File and &Format. Now Format menu has 
  Alt+o shortcut 
  other minor fixes 
  added constants for shapes"shapeNone", 0 "shapeUpArrow", 1 
  "shapeDownArrow", 2 "shapeHollowUpArrow", 3 
  "shapeHollowDownArrow", 4 "shapeSmallUpTriangle", 5 
  "shapeSmallDownTriangle", 6 "shapeHollowSmallUpTriangle", 7 
  "shapeHollowSmallDownTriangle", 8 "shapeUpTriangle", 9 
  "shapeDownTriangle", 10 "shapeHollowUpTriangle", 11 
  "shapeHollowDownTriangle", 12 "shapeSmallSquare", 13 
  "shapeHollowSmallSquare", 15 "shapeSquare", 17 
  "shapeHollowSquare", 19 "shapeSmallCircle", 21 
  "shapeHollowSmallCircle", 23"shapeCircle", 25 "shapeHollowCircle", 
  27 "shapeStar", 29 "shapeHollowStar", 31 "shapeDigit0", 33 
  "shapeDigit1", 35 "shapeDigit2", 37 "shapeDigit3", 39 
  "shapeDigit4", 41 "shapeDigit5", 43 "shapeDigit6", 45 
  "shapeDigit7", 47 "shapeDigit8", 49 "shapeDigit9", 51 
  "shapePositionAbove", 1 Example: PlotShapes( IIF( buy, 
  shapeDigit9 + shapePositonAbove, shapeNone ), colorGreen ); 
CHANGES FOR VERSION 
4.22.0 (as compared to 4.21.1)
  changes made in Indicator Builder are not lost if formula is incorrect - 
  instead error message is displayed and formula is saved even if it has a 
  syntax error 
  if currently displayed indicator formula has an error - the error message 
  does not pop up in a separate window but is displayed in the indicator pane. 
  empty indicators are not displayed in the Indicator Builder and new 
  buttons "Add", "Delete" are provided to add new indicator and remove existing 
  when drawing or moving drawing objects the auto-refresh of the chart is 
  temporarily held to solve problems with drawing on RT charts. 
  Symbol->Information window is not reset every 3 sec when working with 
  RT data. 
  interval between chart updates is now configurable 
  (Preferences->Intraday) 
  Random( seed = none ); function takes new parameter seed.If seed is 
  defined it initializes the seed of random number generator this allows to 
  produce repetitive series of pseudo-random series. If seed is not specified - 
  random number generator continues generation.To reinitialize the 
  generator, use 1 as the seed argument. Any other value for seed sets the 
  generator to a random starting point. Example 1:Graph0 = Random(); 
  // generates different sequence with each refreshExample 2:Graph0 
  = Random(1); // generates the same sequence with each refresh
  new AFL function PlotShapes( shape, color, layer = 0, yposition = 
  graph0 );that allows to plot arrows and other shapes on any 
  chart.Parameters: 
  
    shape defines type of the symbol. when shape is zero nothing is 
    plottedvalues other than zero cause plotting various pre-defined 
    shapes.Odd values plot shape BELOW indicator, even values plot shape 
    ABOVE indicator. 
    color defines color of shape 
    layer defines layer number on which shapes are plotted 
    yposition defines Y-position where shapes are plotted (by default 
    they are plotted 'around' graph0 (first indicator) line) 
  Currently defined shapes areUP ARROW = 1, (below 
  indicator)DOWN ARROW = 2, (above indicator)HOLLOW UP ARROW = 3, 
  (below)HOLLOW DOWN ARROW = 4, (above)SMALL UP TRIANGLE = 5, 
  (below)SMALL DOWN TRIANGLE = 6, (above)HOLLOW SMALL UP TRIANGLE = 7, 
  (below)HOLLOW SMALL DOWN TRIANGLE = 8 , (above)UP TRIANGLE = 9, 
  (below)DOWN TRIANGLE = 10, (above)HOLLOW UP TRIANGLE = 11, 
  (below)HOLLOW DOWN TRIANGLE = 12, (above)SMALL SQUARE = 13, 
  (below)SMALL SQUARE = 14, (above)HOLLOW SMALL SQUARE = 15, 
  (below)HOLLOW SMALL SQUARE = 16,SQUARE = 17, (below)SQUARE = 18, 
  (above)HOLLOW SQUARE = 19, (below)HOLLOW SQUARE = 20, (above)SMALL 
  CIRCLE = 21, (below)SMALL CIRCLE = 22, (above)HOLLOW SMALL CIRCLE = 
  23, (below)HOLLOW SMALL CIRCLE = 24,(above)CIRCLE = 25, 
  (below)CIRCLE = 26, (above)HOLLOW CIRCLE = 27, (below)HOLLOW 
  CIRCLE = 28, (above)STAR = 29, (below)STAR = 30, (above)HOLLOW 
  STAR = 31, (below)HOLLOW STAR = 32, (above)NUMBER 0 = 33, 
  (below)NUMBER 0 = 34, (above)NUMBER 1 = 35, (below)NUMBER 1 = 36, 
  (above)NUMBER 2 = 37, (below)NUMBER 2 = 38, (above)NUMBER 3 = 39, 
  (below)NUMBER 3 = 40, (above)NUMBER 4 = 41, (below)NUMBER 4 = 42, 
  (above)NUMBER 5 = 43, (below)NUMBER 5 = 44, (above)NUMBER 6 = 45, 
  (below)NUMBER 6 = 46, (above)NUMBER 7 = 47, (below)NUMBER 7 = 48, 
  (above)NUMBER 8 = 49, (below)NUMBER 8 = 50, (above)NUMBER 9 = 51, 
  (below)NUMBER 9 = 52, (above)Demo 
  formula:Graph0=MACD();Graph1=Signal();Buy=Cross(Graph0, 
  Graph1);Sell=Cross(Graph1, Graph0);PlotShapes( ( Buy OR Sell ) * ( 1 + 
  Cum( Buy OR Sell ) % 52 ), IIf( Buy, colorGreen, colorRed ), 5 
  );GraphXSpace = 5;
CHANGES FOR VERSION 
4.21.1 (as compared to 4.21.0)
  AddToComposite marks symbol as dirty so timestamp added in the full name 
  is stored properly. 
  "Align custom minute bars to regular market hours" works OK now even if 
  filtering is OFF 
  new methods added to COM interface in 4.21.0 caused incompatibility with 
  AmiQuote because of changed numbering of methods. Now it is fixed so AmiQuote 
  auto-import works again with 4.21.1 
  fixed display of watch list >32 in the workspace tree 
  fixed possible hangup when attempting to draw objects when currently 
  selected layer is hidden
CHANGES FOR VERSION 
4.21.0 (as compared to 4.20.8)
  layers implemented (layers is a well-know concept in every decent 
  painting/drawing/CAD package now it is available to traders for (AFAIK) the 
  first time in technical analysis program) 
  increased number of watch lists (to 64 watch lists) and sectors (to 64 
  sectors) (note that broker.workspace file once saved with new version can not 
  be read back with previous versions) 
  max. number of bars in File->Database Settings increased to 500'000. 
  ASCII importer: added $STRICT 1 mode it checks if Open, High, Low prices 
  are greater than zero 
  COM/OLE interface:new property Broker.Application.DatabasePathnew 
  method: Broker.Application.LoadDatabase( Path )new method: 
  Broker.Application.SaveDatabase() 
  Example VBScript code (Windows Scripting Host):
  Set oAB = CreateObject("Broker.Application")
  WScript.Echo( "Current path to database is " + oAB.DatabasePath 
  )
  if oAB.LoadDatabase("c:\program files\amibroker\data") = True 
  thenWScript.Echo( "succesfully loaded new database" )end if
  WScript.Echo( "Current path to database is " + oAB.DatabasePath 
  )
  oAB.SaveDatabase()
CHANGES FOR VERSION 
4.20.8 (as compared to 4.20.7)
  fixed #include command (CR/LF pair handling) 
  #include now displays error message in the status bar ifincluded file can 
  not be found 
  when calling function defined in script AFL does not convert the method 
  name to lowercase 
  filtering after hours works also for EndTime < StartTime case (usefull 
  for users from Far East tracking US exchanges) 
  fixed bug causing crash on custom indicators using Study() with QuickAFL 
  enabled 
  protection against crash when the user tries to plot negative values on 
  semi-log scale 
  new AFL function: GetDatabaseName - gives the name of the database - the 
  last part (folder) of the database path 
  other minor fixes 
  new myTrack plugin 
  removed (c) text (4.20.8.3431)
CHANGES FOR VERSION 
4.20.7 (as compared to 4.20.6)
  fixed crash occuring on exit on Windows XP (CRegistry class - free() ) 
  fixed problem with saving keyboard editor settings on Win2k 
  fixed problem with different ordering of tickers when case sensitivity is 
  turned on (symbol array is re-sorted on change and re-sorted after loading 
  master file) 
  added one more safety check for non-existing directory when saving layout 
  
CHANGES FOR VERSION 
4.20.6 (as compared to 4.20.5)
  possible bug with AFL editor fixed (streamin) 
  "space" problem in AFL editor fixed 
  fixed bug with switching databases 
  fixed crash occuring when user specified non-existing pen 
  fixed bug in monthly view display (29.02.2000) 
  fixed bug in File->Save database As (into blank directory) 
  fixed title of built-in volume pane 
  ROC function accepts additional parameter that defines how 
  negativevalues are handled. ROC( array, periods = 12, absmode = False 
  )if absmode = False the value returned is array - ref( array, -periods 
  )/ref( array, -periods )if absmode = True the value returned is array - 
  ref( array, -periods )/abs( ref( array, -periods ) ) 
  QuoteTracker plugin now accepts also . (dot) as a date separator 
  myTrack plugin startup routine improved 
CHANGES FOR VERSION 
4.20.5 (as compared to 4.20.3)
  composite symbol is reset properly even if flused out of in-memory cache 
  when $ALLOWNEG is NOT specified in the ASCII importer definition AmiBroker 
  performs the following range checking and fixup on open, low and high 
  pricesif( open == 0 ) open = close;if( high < max( open, close ) ) 
  high = max( open, close );if( low == 0 ) low = min( open, close ) 
  Update Nov 1, 2002: added myTrack real-time plugin. 
HOW TO REPORT BUGS
If you experience any problem with this beta version please send detailed 
description of the problem (especially the steps needed to reproduce it) to <A 
href="">bugs@xxxxxxxxxxxxx 






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