@FINDFIRST

@FINDFIRST[filename [,-nrhsda]]:  Returns the name of the first file that 
matches the filename, which may contain wildcards and "include lists." 
 The second argument, if included, defines the attributes of the files 
that will be included in the search.  Returns an empty string if no files 
match.  The attributes are: 

        N   Normal (no attributes set) 
        R   Read-only 
        H   Hidden 
        S   System 
        D   Directory 
        A   Archive 
 
 The attributes (other than N) can be combined (for example 
 %@FINDFIRST[MYFILE,HS]).  You can prefix an attribute with - to mean 
 "everything except files with this attribute." 

 @FINDFIRST always skips the "." and ".." entries when processing 
 directory names. 

 After @FINDFIRST or the last @FINDNEXT, you must use @FINDCLOSE to avoid 
 running out of directory search handles. 

 See the notes under Variable Functions about quoting returned long 
 filenames.