From help "OLDVAL( ) can return .NULL., even for a field declared as NOT NULL and with SET NULL OFF"

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>Just want to confirm this as the help notes are a bit sketchy - if I open up a local view and append a row and then add in some data, any queries using OLDVAL() on any of the fields returns .null. even though none of the fields allow null values in the table.
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>I assumed that an OLDVAL() on a character field would return a blank character string.
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>Not a big deal as for most all of my checks, I am only interested in comparing the changes anyhow. But it has caught me on one check where the comparison was being skipped because one side of the comparison was returning null.
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>Any way around this or do I have to always check for nulls on an appended record?
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>Albert