I R A F  
                     Image Reduction and Analysis Facility
PACKAGE = echelle
1. ECIDENTIFY CURSOR KEY SUMMARY

?  Help                   a  Affect all features     c  Center feature(s)
d  Delete feature(s)      f  Fit dispersion          g  Fit zero point shift
i  Initialize             j  Go to previous order    k  Go to next order
l  Match coordinate list  m  Mark feature            n  Next feature
o  Go to specified order  p  Pan graph               q  Quit
r  Redraw graph           s  Shift feature           t  Reset position
u  Enter user coordinate  w  Window graph            x  Crosscorrelate peaks
y  Find peaks             z  Zoom graph              .  Nearest feature
+  Next feature           -  Previous feature        I  Interrupt


2. ECIDENTIFY COLON COMMAND SUMMARY

:show [file]              :features [file]           :coordlist [file]
:cradius [value]          :threshold [value]         :database [file]
:ftype [type]             :fwidth [value]            :image [image]
:labels [type]            :match [value]             :maxfeatures [value]
:minsep [value]           :read [image]              :write [image]
:zwidth [value]


3. ECIDENTIFY CURSOR KEYS

?  Clear the screen and print menu of options
a  Apply next (c)enter or (d)elete operation to (a)ll features
c  (C)enter the feature nearest the cursor
d  (D)elete the  feature nearest the cursor
f  (F)it a function of pixel coordinate to the user coordinates
g  Fit a zero point shift to the user coordinates
i  (I)nitialize (delete features and coordinate fit)
j  Go to the previous order
k  Go to the next order
l  Match coordinates in the coordinate (l)ist to features in the data
m  (M)ark a new feature near the cursor
n  Move the cursor or zoom to the (n)ext feature (same as +)
o  Go to the specified (o)rder
p  (P)an to user defined window after (z)ooming on a feature
q  (Q)uit and continue with next image (also carriage return)
r  (R)edraw the graph
s  (S)hift the current feature to the position of the cursor
t  Reset (move) the position of a feature without centering
u  Enter a new (u)ser coordinate for the current feature
w  (W)indow the graph.  Use '?' to window prompt for more help.
x  Crosscorrelate features with the data peaks and reregister
y  Automatically find "maxfeatures" strongest peaks and identify them
z  (Z)oom on the feature nearest the cursor
.  Move the cursor or zoom to the feature nearest the cursor (also space
bar)
+  Move the cursor or zoom to the next feature
-  Move the cursor or zoom to the previous feature
I  Interrupt task immediately.  Database information is not saved.


4. ECIDENTIFY COLON COMMANDS

The parameters are listed or set with the following commands which may be
abbreviated.  To list the value of a parameter type the command alone.

:show file              Show the values of all the parameters
:features file          Write feature list to file (default is STDOUT)

:coordlist file         Coordinate list file
:cradius value          Centering radius in pixels
:threshold value        Detection threshold for feature centering
:database name          Database for recording feature records
:ftype value            Feature type (emission or absorption)
:fwidth value           Feature width in pixels
:image imagename        Set a new image or show the current image
:labels value           Feature label type (none, index, pixel, or user)
:match value            Coordinate list matching distance
:maxfeatures value      Maximum number of features automatically found
:minsep value           Minimum separation allowed between features
:read name              Read a record from the database (name defaults to
image)
:write name             Write a record to the database (name defaults to
image)
:zwidth value           Zoom width in user units