DWfile.getAttributes()

Availability 2.0
Description Gets the attributes of the specified file or folder.
Arguments fileURL
The argument is the file or folder for which you want to get attributes, expressed as a file:// URL.
Returns A string representing the attributes of the specified file or folder, or NULL if the file or folder does not exist. Characters in the string represent the attributes as follows:
R is read only.
D is folder (directory).
H is hidden.
S is system file or folder.
Example The following code gets the attributes of the file mydata.txt and displays an alert box if the file is read only. 
var URL = "file:///c|/temp/mydata.txt";
var str = DWfile.getAttributes(URL);
if (str && (str.indexOf("R") != -1)){
  alert(URL + " is read only!");
}