Tack 3.8
Copyright (C) 1989-1998 White Perch Software
All Rights Reserved

What's New:

Rev. 3.80
  - Minor fixes:
  -  fixed bug in line drawing
  -  fixed memory leak in timing selection routine

Rev. 3.74
  - Many small bug fixes and memory improvements.

Rev. 3.53
  - Fixed bug in copy buffer routine (also used internally by other routines
    in tack) that would potentially crash the program if you were copying
    a buffer that had binary outputs enabled.

Rev. 3.5
  - Improved File Manager (can now select directories and drives from list box).
  - Support for Patchit 2.5 file format (minor updates).
  - Gain is now specified in mv/User Units (it had previously been specified
    as User Units/V).
  - Fixed bug in calculation of standard deviation.

Rev. 3.4
  - Support for Axon Binary Format
  - Axes on main viewer.  All records displayed at standard scaling (i.e.,
    compensate on display if records were recorded at different gains)
  - New and greatly improved graphical timing selection screen.
  - Automatically determines stimulus voltages if they were recorded.
  - Autopeaks implemented (max deviation) on Measure:peak values.

Rev. 3.2 (first shareware release)
  - The manual is complete and is included with this package.  It is in
    two formats - an ascii text version (Tack.doc) - that has lost all of
    its formatting, and a version in the format of Windows Write word
    processor.  If you have windows, you should use Write to print the
    manual as it will retain its formatting.
  - Better support for graphics modes.
  - Support for stroked fonts.

Rev. 3.1:
  - What were the menu options "measure sustained", "measure inward peak", ...
    are now called "values" on the measure menu.  Selecting this brings up
    a menu which allows you to do the same thing.  There is now a submenu
    on this menu "Type" that allows you to select average, minimum, maximum
    etc.  Also, when you complete the measurements, they are now displayed as
    a graphical plot.  At this time the graphical plot cannot be printed
    or exported, but the raw data still can be.  If you are doing multiple
    measurements from a bunch of data files, after you save the first set
    of measurements to a file, you will be prompted for each subsequent
    measurement set whether you want to append this data to the same file.
  - New noise analysis features incorporated:  Power Spectrum, Mean/
    Variance Analysis and Histogram.  Like measure values (above) these
    show their data as a graphical plot, you can then save it to file or
    whatever.  The plots cannot be printed or exported (yet).
  - Help system, Just hit F1 anywhere and you will get help for that area.
  - Dynamic Zoom feature.  This allows you to marquee-select (that means
    to drag a box with a mouse) some of your data traces and you will then zoom
    in on that section.  These functions take over the old role of "mult"
    and "offset".
  - Tack now reads files written by Axon Instruments Clampex version 5.1
    and greater.
  - Scale 'n Sub really works!
  - Data traces can now be displayed with their points connected!  This will
    of course, make the display of these traces slower, but is worth it.
    Also you can select to show all of the points on the trace, otherwise only
    one data point will be shown per X pixel.  If there are less data points
    in your trace than there are pixels in the width of the display, then this
    parameter will make no difference.  Showing all data points in the data
    trace slows down the display also.
  - Tack now uses the Borland Overlay system to allow us to cram more goodies
    in and not make the program overly large.  So, a word about memory is useful
    here.  Tack likes memory.
    Conventional Memory - this is the famous 640K that you may have heard about
     Under normal DOS, this is where all programs have to fit.  Tack uses this
     memory to fit the core of the program, active overlays and most dynamically
     allocated arrays - of which quite a lot are used throughout the program.
    XMS Memory - This is extended memory (that memory above the 1MB boundary)
     that is managed by an XMS memory manager.  Two common XMS memory managers
     are himem.sys and qemm386.sys.  We recommend that you have an XMS memory
     manager loaded, and if you are using Windows in standard or 386 enhanced
     mode you probably have such a memory manager.  Tack uses the XMS memory
     area to store the data that you load.
    EMS Memory - This is an older memory standard.  Tack does not use this,
     but the Borland Overlay system, used by Tack, DOES.  The Overlay system
     will store overlays that were used by Tack and discarded to make room
     for new overlays.  If you do not have EMS (which you don't really need
     for Tack), then overlays will just have to be reloaded from the disk,
     which will slow things down a little, but if you have a disk cache it
     won't really make that big a difference now would it?
    Disk - Yes, Tack does use the disk.  Why not use a disk cache?  It will
     speed up the reloading of overlays.
