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                           RELEASE NOTES
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Release notes for version 1.01,  released 4-16-91

 1. A warning dialog box is presented when deleting a sequence from the
    alignment using the Cut or Clear commands.  It is easy to do this 
    accidently by just pressing the delete key, so it is nice to have
    a way to back out of the operation.

 2. While making change (1), I discovered a bug in the Copy command,
    which caused the program to bomb the _second_ time a sequence was
    Copied to the clipboard.

 3. MACAW now makes use of more memory when performing a search.  
    Previously, the hit array and the diagonal array were each limited 
    to 64K (128K total).  Consequently, it was common to run out of 
    memory when searching over many long sequences, even on systems with
    16 M of RAM. 

 4. There was a bug that caused unpredictable behavior when sending 
    output to a plotter (It had to do with the use of a particular 
    drawing command that was not supported for plotters).  This came up
    in the context of capturing HPGL plotter commands in a file and 
    importing the file into CorelDraw, PageMaker, and so forth.
    After fixing the simple bug, this seems to work correctly.  You need
    to add a line to the [ports] section of your win.ini file to set up
    a filename as a 'printer port', then install an HP plotter driver
    conneted to that filename.  MACAW output is then sent to the file
    and imported into Corel Draw. 

 5. Many users reported confusion at the "(number x)" label that was
    automatically assigned to blocks, so blocks are now left without
    a label when initially created.  You can assign a label in the 
    BlockEditor, but it is not required.

 6. The Autokeep option now only keeps blocks when they are linked.  This
    reduces the accumulation of too many useless blocks.



Release notes for version 1.02,  released 5-10-91

 1. When printing the blocks, the value of m reported was wrong.  This 
    bug has been fixed. 

 2. The Export function allowed the user to specify a line length, but
    then ignored the value and used a line length of 50 instead.  
    Version 1.02 handles line length correctly.



Release notes for version 1.03,  released 8-01-91

 1. ** NOTE **  There has been a slight modification of the file format
    for MACAW data files (*.MCW).  Although it _should_ be transparent,
    it may be wise to make backup copies of all of your data files before
    using the new version.

 2. In previous versions of the program, there was a bug which resulted
    in an inability to read certain MCW files in which any of the user-
    editable text fields (e.g. sequence description) contained the 
    double quote character.  Version 1.03 translates all double quotes
    to the single quote character to avoid this problem.

 3. A new file type "RNA" has been added to the File Open dialog box.
    In addition, there is a new score file "iupac.scr" which includes
    'U' as a valid sequence character (treated exactly like a 'T') as
    well as all of the IUB-IUPAC ambiguity codes. This should be used
    as a replacement for the old "DNAxxx.scr" files, which only accepted
    'G', 'A', 'T', and 'C'.  DNA and RNA sequences may be mixed in a
    single alignment.

 4. The "Search Results" was previously a modal dialog box, meaning that
    the windows behind it were inactivated until the dialog was dismissed
    by pressing the "Done" button.  It is now modeless, so it is possible
    to go back to the schematic or alignment windows while the window is
    open.