OPERATORS
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 The following are the operators you can use with IF, WHILE and 
 DOCASE commands (all comparison are case-sensitive unless stated 
 otherwise) :
 
 EQUAL (Insensitive)     ==   (Comparison is CASE-INSENSITIVE)
 EQUAL (Sensitive)        =   (Comparison is CASE-SENSITIVE)

 NOT EQUAL (Insensitive) !!   (Comparison is CASE-INSENSITIVE)
 NOT EQUAL (Sensitive)   !=   (Comparison is CASE-SENSITIVE)    

 MORE                     >   (Left side more than right side)
 MORE than or EQUAL to   >=

 LESS                    <    (Left side less than right side)
 LESS than or EQUAL to   <=

 FILE HEADER COMPARE     H=   This operator MUST have a file name
                              on the left of it and a comparison
                              string on the right :

                              IF df0:MyFile  H=  "FORM????ILBM"

                              the comparison string contains the
                              starting bytes of the file type you
                              are looking for. - Question marks
                              are wild (-see below-)

 STRING COMPARISON       S=   This MUST have a string on either
                              side of it and will compare them.
                              it is case-insensitive and wild
                              characters can be used (see below).

                              ex : IF "This" S= "THIS"

                              This is meant to be used along with
                              the ReadVar command and provides a
                              faster method of checking file headers
                              than the above H= operator.

 DEVICE COMPARISON       D=   
 FILE/DIR COMPARISON     F=   Both of these need a file, dir or
                              device on either side.
                              D= will yield TRUE if the files/dirs
                              are on the same device, and
                              F= will be TRUE if they are the same
                              file or directory.


 Wild Characters that can be used with H= and S=

    ?    Means any character
    #    Means any Printable character
    %    Means any UnPrintable character

 Operators MUST have a space to each side of them :

 if  This= That        <- is not correct
 if  This=That         <- is not correct
 if  This = That       <- is correct