Why can't you use special characters in a filename, like "?" or
When I try to save a file, if I use special characters in the name (such as a colon, question mark, or exclamation point) in Windows I get a message saying that the file name is invalid. Why is that?

How can I type special characters in Linux? - Super User
In Windows, there is the possibility to type special signs from the keyboard by holding the Alt key and typing a few numbers, that depends on which sign you want to use. Does it work with Linux in ...

Notepad++ inserting special Unicode characters in UTF-8
What's the best ways to enter special Unicode characters into a Notepad++ document? Do I have to rely on the operating system (Windows)? Looking for a see-and-click solution. I can bring up the AS...

Is there an Excel formula to identify special characters in a cell?
Here's a conditional formatting solution that will flag the records with special characters. Just apply a new conditional formatting rule to your data that uses the (extremely long) formula below, where A1 is the first record in the column of file names:

Excel destroying special character when saved as CSV
The problem is, whenever the client saves the excel spreadsheet as an MS-DOS .csv file, many of the special characters get converted to question marks "?" (symbols such as ' " / ). However, if we then open the CSV file and manually replace each ? with the right character it works fine.

Which Special Character Set is accepted in WPA2-PSK passwords?
Apparently the WPA2-PSK password can have a length ranging from 8 to 63 characters. Letters, numbers, and special characters can be used. I would like to know what special characters can be used in...

Is there a list of Windows special directories/shortcuts (like %TEMP ...
There's nothing special about the string "Godmode"; it can be any name you like, so long as it is followed by a period and then the value in curly braces.

Find special character in Excel - Super User
In Microsoft Excel, how can I find cells containing a specific special character? For instance and in particular TABs (0x09). In Word, I can type ^t to mean TAB and a few other special characters c...

Windows Explorer sorting order for special characters?
What is the sorting order used in Windows Explorer? I was specifically wondering what special characters sort after the alphabets? As far as I can tell (test), all special characters seem to be ...

How do I enable Windows special permissions in the security tab?
I need to enable the special permissions on the basic tab of security properties, I tried using anything, icacls cmd, etc. Is there a way to check that box?