Also see ChangeLog for detailed fixes and additions

If you use dap, please let me know about your
experience using it, and suggestions, by mailing
to <dap-users@gnu.org>. Thanks.

2003/05/04 Version 2.2: Implemented function "catcon"
           which allows testing of contrasts for
           models obtained from function "categ".
2003/04/30 Version 2.2: Function "categ" now writes
           a dataset with the estimates, ASEs, and
           the entries in the covariance matrix.
2003/01/20 Version 2.1: Implemented function "loglin",
           for loglinear models, as documented in the
           manual.
2003/01/10 Version 2.0: Dap has a new front end, with
           all control residing in an Emacs session.
2002/12/24 Version 1.8: Function "normal" now reports
           results of Shapiro-Wilk in the lst file and
           gives the option to skip plotting.
           The table for function "lsmeans" now come
           out with the variables sorted by their LS
           means values.
2002/11/21 Verson 1.7: added function "join" as
           documented in manual.
           Implemented variable exclusion using
           initial '!' for function "merge".
           Add axis labeling feature to functions
           "plotlinreg" and "plotlogreg".
2002/11/20 Verson 1.7: added function "split" as
           documented in manual.
2002/11/19 Version 1.7: Changed axis specification
           characters, as indicated in the documentation,
           to avoid conflicts with uppercase directives
           for functions calling "pict_autoaxes" and
           fixed labeling.
2002/11/07 Version 1.7: Function "pctiles" now allows
           up to 9 user defined percentages.
2002/10/30 Version 1.7: In function "plotmeans"
           added variable "style" to call and allowed
           axis name specifications as in function
           "plot".
2002/01/17 Version 1.6: In function "dap_maximize",
           compute maximization steps in each
           coordinate direction in succession and then
           take a maximization step in that direction.
           Performance is greatly improved.
2001/12/30 Version 1.6: In function "outset": if variable
           list begins with '!' then named variables are
           excluded from the output dataset and all
           others are retained.
2001/12/30 Version 1.5: Implemented functions "pict_save"
           and "pict_rest", as documented in manual.
2001/12/27 Version 1.5: Printout for function "categ" now
           indicates which parameters are in the model.
2001/12/18 Version 1.5: Added new "style" parameters to
           functions "plotlinreg" and "plotlogreg" and
           passed these on in the call to function "plot".
           Added "MAXY" option to style specification for
           function "histogram".
2001/12/11 Version 1.5: in function "pict_autoaxes", added
           MINX, MAXX, MINY, MAXY, NXTICKS, and NYTICKS
           capability to the "axspec" parameter. Made
           function "plot" pass such capabilities on to
           "pict_autoaxes".
2001/11/19 Version 1.5: In function "group", changed
           "WIDTH" and "COUNT" to '^' and '#", respectively,
           and made them attached to the number of groups;
           in function "group", checked for NaN values of
           grouping variables and don't cound observation
           if there are any.
2001/11/15 Version 1.5: In function "group", changed
           "NUMBER", "FRACTION", "PERCENT" to
           "#", "/", "%", respectively and allow
           variables to follow, after starting and
           direction specification, if any, and don't
           count observation if any of those variables
           has a nonfinite value.
2001/11/14 Version 1.4: In function "pctile", added
           printing of RANGE.
2001/11/01 Version 1.4: In function "step", return 0
           if zero-length line read.
2001/10/31 Version 1.4: In functions "means",
           incorporated testing for and only including in
           computations non-NaN values in data.
           Incorporated testing only for NaNs in
           functions "pctiles", "corr", "group", "trim",
           "plot", and "normal".
2001/10/15 Version 1.4: In function "histogram", if there
           are missing values this is now reported to
           the .err file instead of the .log file.
           Added "style" options "MIN" and "MAX" to
           function "histogram". Deleted
           "style" option ZERO (which was never
           documented in the manual).
2001/10/01 Version 1.3: Added statistics to function
           "means": VARM (variance of the mean with
           df = number of observations - 1)), VARMFREQ
           (variance of the mean with df = sum of
           weights - 1).
2001/09/28 Version 1.3: Removed clumsy function
           "dap_param"; now header file dap.h does
           #ifdef to determine whether user defined
           parameters ABOVE #include <dap.h>,
           otherwise sets defaults.
2001/09/27 Version 1.3: Write errors to .err file,
           report lines read, written to .log file;
           only display .err automatically.
2001/09/24 Version 1.3: Incorporated weighted
           percentiles into function "pctile" by adding
           a weight variable and values.
2001/09/15 Version 1.3: Renamed "probn" and "npoint" to
           "probz" and "zpoint", resp.
2001/09/15 Version 1.2: Renamed functions "invprobchisq",
           "invprobf", "invprobn", and "invprobt" to
           "chisqpoint", "fpoint", "npoint", and "tpoint".
2001/09/14 Added parameters "marks" and "nmarks" to
           functions "plotlinreg" and "plotlogreg" so that
           they could process files that are partitioned.

Dap is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
2001/11/15 Version 1.5: for "group", changed
           "NUMBER", "FRACTION", "PERCENT" to
           "#", "/", "%", respectively and
           allow variables to follow, after
           starting and direction specification,
           if any, and don't count observation if
           any of those variables has a nonfinite
           value.
2001/10/15 Version 1.4: minimum and maximum points of
           histograms can now be specified.
2001/09/22 Version 1.3: incorporated weighted
           percentiles into function "pctile"; renamed
           functions "probn" and "npoint" to "probz" and
           "zpoint", respectively.
2001/09/15 Renamed functions "invprobchisq", "invprobf",
           "invprobn", and "invprobt" to "chisqpoint",
           "fpoint", "npoint", and "tpoint", resp.
2001/09/14 In version 1.2, the capabilites and syntax
           of functions "plotlinreg" and "plotlogreg"
           have been modified to allow processing of
           datasets that are partitioned.
