ConvertToURL Function
Maqaa faayilii sirna gara faayilii URL itti jijjiira.
String
filename: A file name as string.
5 Ejjatoo fashalaan waamu 
    systemFile$ = "c:\folder\mytext.txt"
    url$ = ConvertToURL( systemFile$ )
    print url$
    systemFileAgain$ = ConvertFromURL( url$ )
    print systemFileAgain$