Editing Tutorial (section)

===Self-documentation===
Of course, we can specify as many parameters as we'd like on the command line. To figure out which parameters are needed for a specific program, just type the name of the program with no input files our output files on the command line to bring up a program's self-documentation.  For example, '''sfwindow''' 's self documentation is:
<pre>
NAME
sfwindow
DESCRIPTION
Window a portion of a dataset. 
SYNOPSIS
sfwindow < in.rsf > out.rsf verb=n squeeze=y 
j#=(1,...) d#=(d1,d2,...) f#=(0,...) min#=(o1,o2,,...) 
n#=(0,...) max#=(o1+(n1-1)*d1,o2+(n1-1)*d2,,...)
PARAMETERS
float   d#=(d1,d2,...)  sampling in #-th dimension 
largeint f#=(0,...)     window start in #-th dimension 
int     j#=(1,...)      jump in #-th dimension 
float   max#=(o1+(n1-1)*d1,o2+(n1-1)*d2,,...)   
maximum in #-th dimension 
float   min#=(o1,o2,,...)       minimum in #-th dimension 
largeint n#=(0,...)     window size in #-th dimension 
bool    squeeze=y [y/n] 
if y, squeeze dimensions equal to 1 to the end 
bool    verb=n [y/n]    Verbosity flag
USED IN
bei/dpmv/krchdmo
bei/dpmv/matt
bei/dwnc/sigmoid
bei/fdm/kjartjac
bei/fld/cube
bei/fld/shotmovie
bei/fld/synmarine
bei/fld/yc
bei/ft1/autocor
bei/ft1/brad
bei/ft1/ft2d
bei/krch/sep73
bei/sg/denmark
bei/sg/toldi
bei/trimo/mod
bei/trimo/subsamp
bei/vela/stretch
bei/vela/vscan
bei/wvs/head
bei/wvs/vscan
cwp/geo2006TimeShiftImagingCondition/flat
cwp/geo2006TimeShiftImagingCondition/icomp
cwp/geo2006TimeShiftImagingCondition/zicig
cwp/geo2007StereographicImagingCondition/flat4
cwp/geo2007StereographicImagingCondition/gaus1
167 more examples listed in:
/usr/local/RSFROOT/share/doc/madagascar/html/sfwindow.html
SOURCE
system/main/window.c
DOCUMENTATION
http://ahay.org/wiki/Guide_to_madagascar_programs#sfwindow
VERSION
1.3-svn
</pre>
The self-documentation tells us the function of the program, as well as the parameters that are available to be specified. The parameter format is type - name=default value [options] and then a short description of the parameter. File parameters request a name of a file. For example: 
<pre> 
file=file.rsf 
</pre>
Note: strings with spaces must be enclosed in quotation marks
(e.g. 'my value') so that the Unix shell could interpret them correctly.