Question on cell borders unexpectedly bolding

A

Arlene

Beginning to think there is a gnome in my machine! :) I
have my chart bordered with the standard, thin border on
the cells. Now throughout the 12 page workbook (which
all have the same formatted worksheets, each with
different data)different columns or rows are randomly
bordered with thicker borders. Yet when I go to borders,
it shows the originally selected cell border, the thin
one.

?!?!?

Thank you!!!
 
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