It allows you to filter inappropriate words from your conversation with something else replaced.

First, you set a sign (such as asterisk) to replace the filtered word in the first blank.

Second, you input the inappropriate words in the second blank field and click Add, all inappropriate words will be kept in the third blank field like “fuck�and“shit�.

Press Save button to complete the process.

Note:

Actually, it is not completely matched. For example, fuck can be replaced by ＊＊＊, but f u c k can not be replaced because of the space between each letter.