WELCOME TO imspec!                                              

This tool allows you to characterize the spectra and their temporal  
evolution at selected source regions. 

There are two methods to display the RHESSI image spectrum: (i) in the 
RGB mode, red/green/blue colors represent increasing energy bands, and 
(ii) in the `slice' mode, cuts through the image cube at given energy 
bands are shown (menu `Spectral Representation').

Use the left mouse button (click and drag) to select regions 	
of which the spectrum will be shown. Several regions may be 		
selected. For each, a spectrum window pops up, in which up to 2 
spectral fits can be made (initiated by `new fit'). The fit boundaries 
(diamonds) can be adjusted using the left mouse button (click and drag). 
The `delete fit' button removes the latest modified  fit. 

If the fits file contains an image cube with several 	
time bins, then a movie of the spectral evolution can be generated. 	
The actual time bin is shown in the Time Selection Menu (e.g., 2/12 	
indicates bin 2 of 12). In this menu, you may use the < > (<< >>) buttons 
to step (move) through the time dimension of the image cube. The result of 
time-dependent fits (if any) is displayed by `Show Fit(t)'. 

Output to ASCII, IDL SAVE, and POSTSCRIPT files (idl.asc,idl.dat,idl.ps)  	
is provided by the respective buttons. To use the .dat file, use `IDL>restore idl.dat'  	
and look at the `readme' string for explanation of the meaning of the fit coefficients. 	

Hint: although the update should work automatically, 	
you may use `redraw' and `make fit' to enforce actuality and activate a 
spectrum window.