Nokia N91 User Manual page 85

By quality. If you do not want external cascading style
sheets to be downloaded, select
Cookies—To enable or disable the receiving and sending of
cookies.
Glossary: Cookies are a means of content providers to
identify users and their preferences for frequently used
content.
Java/ECMA script—To enable or disable the use of scripts.
Security warnings—To hide or show security notifications.
Conf. DTMF sending—Choose whether you want to
confirm before the device sends DTMF tones during a voice
call. See also 'Options during a voice call', p. 34.
By speed.
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