API ScrollingMessageFrame SetFadeDuration

Set the fade duration (the time it takes from the line starts to fade till it's hidden) of lines added to a ScrollingMessageFrame.
 ScrollingMessageFrame:SetFadeDuration(seconds);
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;Arguments
:(Number seconds)
:;seconds : The duration of the fade in seconds.
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;Returns
:;nil
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;Example
 DEFAULT_CHAT_FRAME:SetFadeDuration(15);
;Result
 Changes the fade duration for lines added or updated to 15 seconds (very slow fade).
==Details==
:SetFadeDuration(seconds) doesn't affect already visible lines, unless these are updated.
:A way to update them is to call one of the Scroll methods.
:The default fade duration seems to be 3 seconds.
:See also ScrollingMessageFrame:SetFading([isEnabled]) and ScrollingMessageFrame:SetTimeVisible(seconds).