how do i use the "Format %" ?

DELPHI 7 (newbie)
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In my application I have to present several big numbers in editboxes and print them on a printer.
The problem is that the numbers are huge and i want something more elegant.
Example : Instead using a big editbox for N=1234567890.1234 I want something like 1.23E09 or even better 12.34E08. Get the picture ?
How can i do that using the "format %???" ? I have read the .hlp file and it doesn't work out the way i want to.



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