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entries in the colormap (the colormap entry number is shown on the
vertical, "frequency" axis).  The resulting display is particularly
useful with the "move contour" operation.
.pp
To try this, bring up a spectrogram in a separate window, load the
ESPS/lib/waves/greymap as the colormap, change the middle button mode
to "move contour", put the mouse in the spectrogram window, hold down
the middle button, and move the mouse.  The red band in the
color.fspec window will indicate the range of spectral values that are
displayed in red.  Similarly, use the "modify intensity" operation
after loading the colormap ESPS/lib/waves/Colormap.
.sh 2 "Improved Error Reporting for Commands"
.lp
If the global \fIverbose\fP is set greater than 1 (the default is 1),
detailed feedback is now provided for the parsing of commands given to
\fIwaves\fP+.  Unrecognized commands are now reported as such (even
for \fIverbose\fP == 1), rather than being ignored silently as they
were in previous releases.
.sh 2 "Other Changes and Fixes"
.np
The \fIwaves\fP+ option to specify use of a particular startup profile
has been changed from \fB-W\fP to \fB-w\fP (this because \fB-W\fP is
often used to pass window-system parameters). 
.np
When a header-less file is read by \fIwaves\fP+, the default header
specified by the \fIwaves\fP+ global \fIdef_header\fP is used.  This
default header can now be any ESPS FEA header.  Such a header can be
generated from an ASCII description of the data by \fIaddfeahd\fP
(1\-\s-1ESPS\s+1).  The default .wave_pro sets the default header to
/usr/esps/lib/waves/def_head.feasd.  This is a FEA_SD header with
sampling rate 8000.  The previous default (the SIGnal header
dummy.header) is now in /usr/esps/lib/waves/def_head.sig.
.np
Play commands implemented as external system calls (to the
\fIplay_prog\fP) are now run in the background. This means that cursor
and menu interactions can continue as soon as the play has been
initiated.  
.np
External play commands generated via \fIadd_espsf\fP are now 
run in the background if the \fIdisplay\fP keyword has the value 0
(i.e., when \fIwaves\fP+ is not to display the resulting signal). 
.np
The \fIwaves\fP+ global \fIdo_color\fP (0 for monchrome, 1 for
multi-plane) is now set internally on startup prior to reading the
startup profile, and is no longer reset each time a new window is
created.  The global should not be set in your profile unless
you wish to override the default.  
.np 
The tracks of arbitrary FEA files overlaid on spectrograms are now
colored in the same way as formant-bandwidth files rather than being
all black.
.np
Axis marking algorithms have been improved for spectrogram and F0 views.
.np
Command files can now contain comments (lines with "#" as the first
character).  
.np
Much of the annoying behavior in "align and rescale" has been fixed.  
.np
The external calls to esps programs were all changed so that the range
option is given as -r start:end in all cases.  (Previously, -p was
used for SD files).  These changes correspond to changes in ESPS 4.0. 
.np
Previously, when formant tracks overlaid on a spectrogram were
edited, the modified version would not be written out when the
spectrogram was killed, or when waves quit.  This bug has been fixed.
.np
The `bracket-markers' operation will refuse to operate when the left
and right markers coincide.  Previously in such circumstances, the operation
would leave the window in an awkward state that was difficult to get out of--
for example, no amount of `zooming out' would have any effect.  (It is easy
to superpose the markers inadvertently with the `up-down-move' button action
by pressing and releasing the button without moving the mouse.)
.np
The behavior of the \fIwaves\fP+ \fIsleep\fP command has been
improved.  Correct operation no longer depends on the cursor
remaining in the control panel.
.np
Fixed failure to remove display object when all signal windows were
removed.  This bug had the side effect of sometimes leaving 
attachment objects active after explicit or implicit "kill ..."
commands. 
.np
Fixed bug causing core dump on exit with \fIdebug_level\fP non-zero. 
.np
When markers are at extremes of signal (as initially), some
requests appeared to require more data (by 1 sample) than was 
present; this has been fixed.  
.np
Fixed bug causing core dump when quitting \fIwaves\fP+ after bringing 
up empty formant file and editing (no edited file was written out).  
.np
When one of the various `play' menu items is invoked in a display of a
signal, such as a spectrogram or derived FEA file, that is not itself
playable, \fIwaves\fP+ searches for a related signal that is playable,
such as a sampled-data file belonging to the same object as the
original signal.  In version 2.0, the scope of the search has been
expanded to include the ESPS refer file and the first source file
given in the ESPS header (if present) of the original signal.  As a
last resort, the search always returns the current signal.  This means
that the external programs determined by the globals \fIplay_prog\fP
and \fIsgram_prog\fP will be called as a last resort (they will refuse
to run on many files, but that is under the user's control).
.np
The behavior of the HELP button was changed to bring up the file a
short help file (ESPS/lib/waves/waves+.help) in a text window.  This 
file gives startup information, explains the command panel, lists 
the \fIwaves\fP+ globals, and lists the \fIwaves\fP+ commands.  
Users
can display the entire \fIwaves\fP+ manual by running \fIeman\fP in
a suitable window.  In the X Windows version, \fIwaves\fP+ has a
control panel button to view the manual.  
.np
Overlays on non-spectrogram signals behave a little more reasonably
than before in that negative values are no longer clipped to zero.
Such overlays are still useful only in special cases, however, and
should not be considered as a general feature.
.np
Various inconsistencies between displayed data and data in files were 
corrected (prior to external ESPS calls). 
.np
Fixed a bug that sometimes caused the external play command to be
incorrectly called when a DSP board is present.  
.np
There is now better documentation (in the \fIwplay\fP and
\fIwrecord\fP man pages) for the rate conversions performed by the 
DSP32 board. 
.np
The valid receiver name for \fIwaves\fP+ commands is "waves"; i.e., it
no longer depends on the name of the program that was invoked.  
.sh 1 "CHANGES TO \fIformant\fP"
.np
The maximum number of formants tracked has been increased to seven. 
.np
An interpolation scheme was added to F0 estimation algorithm;
quantization problems are decreased significantly.
.np
The debug option was changed from \fB-d\fP to the ESPS-standard
\fB-x\fP.  
.np
A new option (-\fBR\fP) was added to control the window over which 
maximum rms energy calculations are made.  
.np
A new option (-\fBB\fP) was added to control the maximum internal 
buffer size.  This controls the maximum signal length that can be 
handled by \fIformant\fP.  
.sh 1 "CHANGES TO \fIspectrum\fP"
.np
An additional spectrum analysis method has been added:
\fIlog-mag-DFTR\fP.  This is a discrete Fourier transform of arbitrary
size (i.e., not necessarily a power of 2), with a maximum size of 500
points.
.np
A new control window item \fIreticle\fP toggles a frequency vs. dB
reticle in the spectrum analysis window. 
.np
A new control window item \fIFB\fP toggles (ON/OFF) the computation
and printout of formant frequency and bandwidth estimates. The
\fIFB\fP switch only has an effect if the spectrum analysis method is
an autoregressive type, i.e., autocorrelation or covariance.
.np
To make the \fIreticle\fP and \fIFB\fP switches fit
in the control panel, several names have been shortened or changed.
.np
Some of the start up defaults have been changed, so be careful.
.sh 1 "CHANGES TO \fIlabel\fP"
.np
The label control panel has a new item: \fILabel Menu File\fP.  This
allows the user to change the label menu directly (the initial menu is
still ESPS/lib/waves/labelmenu).  
.np
The view to which the label window attaches may now be
specified explicitly.  
.np
The label window size is now an adjustable parameter.
.sh 1 "LICENSE MANAGER ISSUES"
.lp
\fIwaves\fP+ checks out a license (if one is available) on startup and
returns it on exit.  The auxiliary programs will run provided that a
\fIwaves\fP+ license has been checked out.  Thus, if you are running
\fIwaves\fP+, you can run the auxiliary programs in other windows and
\fIwaves\fP+ can run them as external calls.  The program pair
\fIwcheckout\fP/\fIwfree\fP are provided so that you can run the
auxilliary programs without running \fIwaves\fP+ (assuming a license
is available).  This is useful, for example, when you not on a display
terminal (e.g., rlogin or dialup).
.lp
If \fIwaves\fP+ exits ungracefully (e.g., ^C or harsh kill), the
license will not be returned and it take approximately 3 minutes for
the license manager (\fIelmd\fP) to declare it defunct.  This is a bug
and will be fixed in a future release.       
.sh 1 "KNOWN BUGS PROBLEMS"
.np
On Convex systems, with our X programs (and perhaps others?), it is
necessary to use the Internet address of the X server when setting the
\fBDISPLAY\fR environment variable.   For example, instead of:
.nf
.ft CW
% setenv DISPLAY fred:0.0
.fi
.ft R
.br
It is necessary to use the command:
.nf
.ft CW
% setenv DISPLAY 134.45.232.8:0.0
.fi
.ft R
.br
Where 134.45.232.8 is the Internet address of host fred.
.np
On Convex systems, depending on the X server, the \fIxmcd\fR program
might fail and result in a white plot on a white background.
(\fIxmcd\fR is called by the plot programs to do the X Window drawing.)
There is an alternate binary, \fI/usr/esps/bin/xmcd.old\fR, that should
be renamed to \fIxmcd\fR if the standard \fIxmcd\fR fails.   
.np
On Masscomp/Concurrent systems it may be necessary to set the \fIDISPLAY\fR
environment variable to the full hostname of your system, rather than
the generic unix:0.0.   For example, if the network hostname of your
system is fred, then you may have to:
.nf
.ft CW
% setenv DISPLAY fred:0.0
.fi
.ft R
.np
On systems not running a network, in order the for the license server
software to operate you need to set the \fBELM_HOST\fR variable to
\fIlocalhost\fR, instead of the network hostname.   Also in this case,
you may need to set the X Window \fBDISPLAY\fR variable to localhost
also (\fIe.g.\fR localhost:0.0).
.np
Under certain conditions on Apollo systems, data windows are painted twice
when uncovered or when changing size or scale.   We realize that this is
annoying and are working on a solution.
.np
For the most recent information about known problems with \fIwaves+\fR, 
please see the
BUGS section in the on-line copy of the waves+ manual page (i.e., run
"eman waves+").