L TES 01/27/04   1003
Test data required for models with errors - untested code.

L ENH 01/27/04   1004
Model errors need to be propagated through Plot object.

L ENH 01/27/04   1006
Code model.dat file for Switch and Scale parameters

L BUG 01/27/04   1007
Spacing in parameter link expression - fails to parse correctly.
(Also in xs11).

L UNI 01/27/04   1010
Limits to parameter numbers for table models.  Code will be very slow
or crash if many table model params are present.  Actual limit is about 30,
practical limit should be about 10.

L BUG 01/27/04   1013
Plot contour SEGV with certain inputs.  Fault is with setting contour levels.

L UNI 01/27/04   1021
Store command

L UNI 01/27/04   1022
Restore command

L UNI 01/27/04   1026
Help modes for local model and script directory.

L BUG 01/27/04   1028
Reinitialize mixing model after data are changed. 
Running mixing model, changing data, rerunning, and changing data back
may not give the same results in both cases.

L ENH 01/27/04   1031
ASCII data format: ability to read and fit ASCII data files.  Check with 
KAA what format flux2xspec accepts.

L BUG 01/27/04   1035
Error codes from Eqwidth may be incorrect when some of the spectra produce
results and others do not.

L UNI 01/27/04   1036
Thleqw unimplemented.

L BUG 02/02/04   1041
Eqwidth is not resetting defaults from previous user entered commands.

L BUG 03/02/04   1049
Project mixmodel seg faults on Linux only, when the second of 2 loaded
spectra has all its channels ignored.  This does not happen if a 3rd 
spectrum with noticed channels is loaded. Perhaps some sort of check for 
this situation should be done before mixing is attempted.

L BUG 06/24/04   1100
When many (~100) spectra loaded all in separate plot groups, simply calling
iplot may cause a seg fault.

L BUG 07/09/04   1110
Getting "Fit not current" warning when changing parameter of inactive 
model, but plotting data with active model. (Actually the only 
problem now is that changing an inactive model causes a "valid fit
does not exist" message to show up - 12/06)

M BUG 07/22/04   1119
Need to check "response none" handling for case of multiple sources.

L ENH 09/14/04   1142
Allow users to enter some special symbol for filenames in order to specify
relative paths from data rather than run directory.

M BUG 10/22/04   1153
Seg-fault occurs for an RMF that has all zeros in a row, and incorrectly
has f_chan and n_chan set to access them anyway.  This occurs through
divide by zero during normalizing.

M BUG 11/03/04   1158
For cases where spectra have been loaded in a complex way (see 1157),
show data command doesn't necessarily print output in order of increasing
spectrum number.  This should be easy to do now that bundledSpectra
array exists in DataContainer.

L BUG 11/23/04   1166
When dealing with named models, xsError command should output the name.
Currently it only outputs the par number.

M BUG 12/01/04   1169
During ModelContainer::Update, models shouldn't need to be recalculated
during stage where old responses have been removed and before new
responses have been attached.  This is related to issue of sending
spectrum number = 0 to model functions when dummy resp is attached.

L BUG 12/07/04   1172
Possible bug: need to check that LevMarq exits fit when all parameters
are pegged.  It should not prompt user to continue fitting.

L ENH 02/01/05   1186
Add ability to specify parameter limits as a function of other 
parameters, ie. param3 <= param2.

M BUG 03/22/05   1204
ignore/notice bug, doesn't accept " :10-20", where it should be using
previously entered spectrum range.

M BUG 04/06/05   1219
If users delete their src tree, or simply move the installation away
from it, they will run into problems building local models.  This results
from our use of tree structures in include statements.  One temp fix
is to manually hack in the path to the src tree into the HD_SRC 
variable in Makefile created by initpackage.

L BUG 04/18/05   1226
If spectra and backfile have quality cols with all 1s, it seg-faults during
groupArrays of background file.

M BUG 05/05/05   1246
Cannot not use arf command to specify arfs unless rmf is in place.  v11
however does allow this.

M BUG 05/06/05   1247
v12 currently bins this situation into 2 bins:
Q 0, 1, 0, 0
G 1, 1, -1, 1
it should be binning into 3 as does v11.

M BUG 05/09/05   1249
Certain SPI ARFs are causing seg-fault upon loading with multiple model
files (Linux only).  I've narrowed this down to ARFS corresponding to
sources 1 and 4 in C.Shrader's test data. (Turns out failure occurred
for ARFs having EXTVER = 2 in their headers.  This needs to be addressed
in CCfits.)

L UNI 05/12/05   1257
SPI data fakeit appears to be unimplemented for case of using dummy
response on fake data based on original data.

M BUG 05/16/05   1264
When fitting from a script, "Number of trials exceeded" message is
preceded by tcl jargon.

L ENH 05/24/05   1269
Allow default row specifier = 1 when dealing w/ type-II file with
only 1 row.

L ENH 06/09/05   1294
Perhaps allow user to load only part of response (via something like a
"pre-ignore" command) to save memory when using only a small part of the
matrix.  (Maurice Leutenegger)

L ENH 06/24/05   1298
Allow loading of type I data format with {n} notation, where n refers
to a spectrum extension number rather than a row.

M ENH 08/01/05   1321
Martin Still's suggestion: add plot option to work in SI units
(axes in mJy and Hz) (added 8/08: also allow more general units).

L ENH 08/03/05   1324
Implement a new 'alias' command for naming table models.

M BUG 09/29/05   1359
In editmod, when faced with an ambigous command as described in the
manual, it is not prompting user.  Instead it just grabs the first
component.

M BUG 10/26/05   1367
Needs to better handle the error given by scalar QUALITY or GROUPING 
column given with type-2 files.

M BUG 11/01/05   1373
If a table model is loaded, then the file is changed and reloaded, the 
table doesn't change.  User needs to exit xspec in order to pick up the
change.  (Eric Gotthelf)

L DES 12/21/05   1392
Currently have both Fortran (ldaped.f, rdaped.f) and C++ (EmissionLines/
Apec.cxx) code that reads APEC files.  These should be unified at some
point.

M ENH 01/12/06   1401
Make acroread command selection more user friendly.  Ideally, Xspec.init
would be customized on installation, but perhaps an output message to
user upon acroread failure would suffice.

M BUG 01/20/06   1406
v11 allows this type of syntax inside a script when running it from
"source" command: "fakeit 1 & / & / & /", while v12 requires the use
of the "@" symbol.  I assume this is true for other multi-line commands
as well.  It appears to be due to XSparse::executingScript not being
set to "true" when run from "source" command.  (Simon Vaughan)

M BUG 01/27/06   1410
Tclout plot contour is not working.  Plot::saveArray function needs
to add a special case for contour plots.

M BUG 01/30/06   1413
After untie on a linked parameter, the parameter should keep all its
values the same (except of course delta fit) and not reinitialize them
from model.dat file. (Jeremy Sanders)  (Note: this repeats issue 1308)

M ENH 02/21/06   1431
Possibly add f90 capability to initpackage.  See P. Leopardi's
02/17 email via KAA.  This will require conforming changes in 
Xspec/BUILD_DIR/Makefile-std as well as some possible hmakerc changes.

M BUG 03/02/06   1435
initpackage recompiles any model source files, even if the object
files are more recent.

M BUG 03/13/06   1438
When a model is applied to 2 or more spectra whose responses have 
different input energies, "plot model" only seems to plot one of them.
The trouble is in the Model version of Plot::initializePlotGroup.

M ENH 03/17/06   1439
Expand eqwidth to allow for calculations of multiplicative 
components.  In this case the continuum is defined as all additive
and multiplicative components that are multiplied by the particular
multiplicative component under study.

M ENH 03/23/06   1443
Add a more flexible format for the energy ascii file.  Lines could also
contain [<number of bins>] [log|lin] following the energy value.  
Number of bins would apply to the range between the preceding energy
value and this.

M BUG 04/19/06   1449
Undo is seg-faulting when applied after the removal of a type-II 
spectrum from a still existing type-II data set.

M UNI 04/24/06   1451
The weight command needs to take an additional parameter for spectra
range.  This ability was added into v11 at some point.  Also see 1454. 
(Bin-Bin Zhang)

M BUG 05/11/06   1466
Need to look into undo command behavior when autosave frequency is set
to something other than 1.

M BUG 09/11/06   1495
When running system commands (ie. ls, date) from XSPEC's shell, they get 
echoed with full path at the bottom of the output. (Roderick Johnstone)

M BUG 09/13/06   1497
Several save command issues: remove default insertions of "cd <fullpath>"
in save output (see KAA 9/12 email).  Write separate ignore commands
on separate lines.  Sort model by source number.  (Steve Snowden)

M BUG 10/25/06   1514
Undo is not working on a "data none" when there was more than 1 detector
assigned to the erased spectrum.

M BUG 10/26/06   1516
The chatter level of the "pegged parameter" message should be adjusted
to allow it to be killed off without removing the regular output.

M BUG 12/11/06   1534
Newpar seg-faults if it tries to create a parameter link that would
result in a circular dependency.

M ENH 12/18/06   1537
Implement a new StatMethod class for Kolmogorov-Smirnov statistics.
This should be a template class to allow for variations.

M BUG 01/02/07   1543
Addcomp and editmod should not allow a mix component to be added to an
inactive model.  The best place to check for this appears to be
Model::insertComponent.

M ENH 01/18/07   1550
Add a setplot option to put each dataset (and model) into its own window.
Thus if there were two datasets and the user did a plot data there would 
be two windows (stacked vertically).

M BUG 03/06/07   1565
Currently QUALITY columns in background files are ignored.  Instead,
an overall quality should be equal to the worst of either the source
or background.

M ENH 05/09/07   1584
Provide a shortcut to the response syntax when reusing the same
response.  ie. response 2:1 = 1:1   (Mark Bautz)

M BUG 05/30/07   1594
If a data file has a "NULL" entry, this is read in as a NaN and seems
to be independent of whether or not the address of a nullVal is sent
to the CCfits read function (Jeremy Sanders).

M ENH 05/31/07   1596
As an example, for case of model A(B+C) followed by editmod A(B)+C,
it'd be better if C could retain its parameter values.  As it is, 
they are being reset. (J. Sanders)

M BUG 06/19/07   1609
In CCfits, Column::readArrays functions should be able to handle scalar
column case as well as vector columns.

M ENH 07/13/07   1618
Convert plot margin to show a cumulative distribution.  For 2-D case,
the proper method for this still needs to be determined.

M BUG 09/12/07   1640
When 2 parameters are linked and they have different hard limits, the
tighter of the 2 ranges should always take precedence.  Otherwise this
can particularly cause problems for table models, producing an out
of range error. 

M ENH 10/10/07   1654
For plot efficiency, have it take into account ignored channels the way
v11 does.  (Goro Sato)

M ENH 10/16/07   1657
Add OpenMP pragmas in key places to allow multithreading.

M ENH 11/16/07   1669
Add ability to assign mix models to source numbers other than 1.  This
will require passing source number info to the mix functions, and having
ModelContainer deal with more than 1 copy of a given mix model.

M BUG 11/29/07   1673
When using error command on periodic parameters, bracketting should
take smaller (perhaps linear) steps.

M ENH 12/03/07   1675
Steppar should save the parameter values if a new minimum is found, 
and at the end the user should be prompted whether to replace the 
parameters with the new minimum.  Also, tclout steppar needs an option
delstat to give the delta statistic column of the steppar output.

M ENH 12/03/07   1676
Add new chain/fit hybrid capability.  Something like:
   chain parameters 1 3 4
   chain run chain.fits
where the chain would be produced for 1,3,4, and all other pars would
be fit at each step.  (See 12/03 emails)

M BUG 02/04/08   1690
The tcl flush command does not seem to be available from inside a v12
shell, nor does it show up among the output list of "info commands".
(Dave Strickland)

M BUG 03/27/08   1712
Data command bug: should be allowed to delete multiple spectra (and
not just highest numbered ones) by doing something like "data
none none/".

M ENH 04/29/08   1717
Add feature to have autocompletion of Tcl commands and variable names.

M BUG 04/29/08   1718
The "help minuit" option does not work if help is set to access online
files rather than local PDF.

M ENH 06/03/08 1722
Allow setplot group to group spectra which have the same energy bins but
different channels of bad quality. (Carlos Gabriel)

M ENH 06/09/08  1724
Allow the following syntax for assigning a source N to a model:
model N = <name>
This is to allow multiple sources to use the same model without having
to link parameters.

M BUG 09/24/08  1764
Log files do not specifically show parameters values entered by users
during model prompting or newpar.

M ENH 10/31/08   1772
In fakeit, allow users to override the background exposure time, perhaps
on the command line such as "fakeit background.pha 50000" (see 10/31
email).

M ENH 11/19/08   1776
Add second derivatives to alpha matrix for C-stat fitting (see 11/19
email for explanation).  (Marten van Kerkwijk)

M ENH 11/24/08   1779
Allow redshift parameter to be added to any model by prefacing the name
with z (but not cooling flow models).

M ENH 12/09/08  1788
Plot chisq when used with cstat needs to be expanded to deal with case
where background files are present.

M ENH 01/08/09  1794
Add a pkg-config file to the CCfits distribution, similar to the
cfitsio.pc file.  (Sergio Pascual)

M ENH 01/14/09  1797
Add NaN detection when receiving model function output.

M ENH 01/21/09  1800
Add a way to allow the linking of gain fit parameters.  (Andy Beardmore)

M ENH 01/22/09  1801
Add optional case-insensitive Column name search to CCfits Table classes
(Gudlaugur Johannesson)

M ENH 01/23/09  1802
Add a flag to Xspec.init file to turn off the printing of absolute paths
into save files. (Una Hwang)

M ENH 02/11/09  1807
Store gain fit parameter limit values in response files with new
keywords (ie. GSLOP_MIN, GSLOP_MAX, etc.).  (see 02/11 email from
M. Guainazzi)

M ENH 02/12/09  1808
Redesign Plot classes to allow arbitrary combinations of plots rather 
than just the currently hardcoded multi-panel combinations.

M BUG 02/13/09  1810
There is currently no way to specify gain fit parameters to be used
in the error command. (Andy Beardmore)

M DOC 02/27/09  1815
Changes needed for PDF distribution (already made in online html):
-Add par9 to kerrdisk model.

M DOC 03/03/09  1816
New tclout sigma option.

M ENH 03/11/09  1818
In CCfits: add the ability to configure the readAllKeys/copyAllKeys
functions with additional keyword categories.  Also provide wrappers
for the cfitsio indexed keyword functions.

M DOC 03/13/09  1821
New -udmget option for initpackage.

M ENH 03/16/09  1823
In CCfits: The Table::column() function should be part of the ExtHDU
interface (and possibly so should the protected Table::numColumns()
function). 

M DOC 03/18/09  1826
Need to correct the CCfits documentation for the Column::read functions
dealing with null values.  They should be restating the rules for
cfitsio's fits_read_col function.

M BUG 03/20/09  1827
Undo crashes when performed on the previous data command AND other
data is loaded from an earlier call.

M BUG 03/23/09  1828
In CCfits:  The Column::addNullValue function seems incapable of 
performing as intended, unless there's a way to get CFITSIO to 
retroactively process a newly added TNULLn keyword.  (It appears the
keyword must exist when column is created.)  Also, may want to add
Column::isNullSet and getNullValue functions, the second of which may
overlap with item 1818.

M DOC 03/23/09  1829
Improve the explanations of the method/fit <critical delta> parameter,
and the error command <tolerance>.

M DOC 04/06/09  1833
Add the "delta" option to the "xset" command page.  It is currently
mentioned only in the "newpar" description.

M BUG 04/10/09  1835
Several of the Ascii text files in modelData contain extra line-feed
characters that are causing problems on Solaris 10 w/f90.  (See 4/10
email from S.Doe)

M BUG 04/14/09  1837
CCfits Column read and write functions should allow the same
vector<S>/valarray<S> to Column<T> conversions for variable-width
columns that they already do for fixed-width columns (see ColumnT.h). 

M DOC 04/21/09  1839
Add an example for the tclout error string to further clarify the 
ordering of the T/F flags.  (Pat Broos)

M ENH 05/06/09  1842
Add a dummyrsp option for specifying in wavelengths rather than
energies, and tie it to use of setplot wave -- see 05/06 email.
(Jeremy Sanders)

M BUG 05/07/09  1843
Freeze and thaw are not saving and sharing the previously entered range
as the manual describes, and as v11 does.