IE favorites are just files, in particular .url files. On Windows, it is forbidden to have a file name with certain characters. This includes the characters /and :. IE replaces them -, and does not bother the user about this.
: \ / : * ? " < > |
- IE, , . , : 396 . MAX_PATH Windows - 260 . , IE - , , - ( , 50 ). , URL-. , .
. , , IE 128 ( , - , ). , 128 IE, URL .
window.external.AddFavorite() IE; , , , , MAX_PATH.