Something from MSDN and PSDK

As I am often looking for information or solutions at MSDN or in PSDK, my eye is sometimes caught by kinda funny sentence. Most of them give sense in particular context but are funny alone. You can find it yourself in PSDK to see I am not fooling. Let's see:

RegQueryValueEx

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When calling the RegQueryValueEx function with hKey set to the HKEY_PERFORMANCE_DATA handle and a value string of a specified object, the returned data structure sometimes has unrequested objects. Don’t be surprised; this is normal behavior.
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DeleteFile

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To prevent loss of data, close files before attempting to delete them.
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GetWindowTextLength

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Under certain conditions, the GetWindowTextLength function may return a value that is larger than the actual length of the text.
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SwitchToFiber

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Warning: Avoid making the following call:

SwitchToFiber( GetCurrentFiber() );

This call causes unpredictable problems.
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About Mailslots

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Note that Windows does not support messages that are 425 or 426 bytes.
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WM_PAINTICON

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Windows 95/98/Me, Windows NT 4.0 and later: This message is sent only to 16-bit windows (note that this is with a lowercase "W"), and only for compatibility reasons.
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