SW description - should allow enter of special characters

The application does not allow user to input many characters. For example, you cannot input HTML tags or special characters.

If the description is going to hold any text (not according to some strict format such as SSN number, etc.) then it SHOULD allow users to input the characters. Security concerns related to 'dangerous' characters must be handled with proper encoding of output data, not input validation. Also the input field should allow Polish language characters such as ć, ś, ń.​

User may be limited, when trying to provide description of the SW