Locating blocks

How does one go about locating blocks in a drawing? I have some blocks I want to purge but ACAD says they are in use, and I can't locate them
in the drawing.
Kent Kostuk snipped-for-privacy@usask.ca
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The drawing probably contains composite blocks, i.e. blocks that contain other blocks (the ones you are trying to delete).
Kostuk) wrote:

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