see Primus emc60253

"In excluding ???????? Celerra is following windows semantics at the protocol level. For Microsoft - ???????? : means 8 characters not taking into account '.' ..

"excl=????????" is found to exclude not only the files fitting the format of Excel temporary files, but also files with four character names and a three character extension. A file like "abcd.txt" is excluded since the "." is counted as a character and the total string length is eight characters. ..

In NAS 5.6 and above, "excl=????????" will exclude all files names with 8 characters - i.e. "abcdefgh" will be excluded just like "abcd.exe" is excluded.  In NAS 5.6 and above, "excl=>>>>>>>>" will exclude all file names with 1 to 8 characters, not including extension, that is, "abc" will be excluded just like "abcdefgh" is excluded."