Nope, I use extra-fine-point Sharpies all the time with no problem.  The 
only time I've ever had any data loss was when I tried to use another, 
off-brand marker.  My advice:  stay with the Sharpie name brand.

 Joyce in southeast Ohio

 >
> I've never had a Sharpie bleed...maybe someone else has?
>
> Tony Mayer
>
> 

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