Help:$smwgPropertyInvalidCharacterList

is a configuration parameter that sets a list of invalid characters which are not allowed to be used for property naming. The configuration parameter was introduced in CiteRef::gh:smw:2282, extended in CiteRef::gh:smw:2861CiteRef::gh:smw:3478 and further extended in CiteRef::gh:smw:3751.

Default setting
This means that the specified characters are not allowed for naming properties.

Changing the default setting
To modify the setting to this configuration parameter, add one of the following lines to your "LocalSettings.php" file after the  call:

or
 * Extend the list of disallowed characters


 * Reduce the list of disallowed characters


 * Allow all characters