st: display of string variables

["Wentworth, Seyda" <Seyda.Wentworth@ssa.gov>]

Hello,

I have a long string variable created by 
gen str20 x=y+z+t
where y,z,t are also string variables.
When I click on the data browser, I see the variable x in the exponential
format. How do I transform it to fixed format?
Thanks
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