Negate automatic filters
You can negate an automatic filter by selecting the filter and pressing Spacebar. For example, if you choose WPA2 (PSK) from the Security category and press Spacebar, only networks that do not match the WPA2 (PSK) filter are shown. To revert the filter, press Spacebar again.The prefix ~ identifies a negated automatic filter, for example, ~WPA2 (PSK).