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Name Modified Size InfoDownloads / Week
G-calc.exe 2012-09-27 475.5 kB
readme.txt 2012-09-27 88 Bytes
Totals: 2 Items   475.6 kB 0
Version 1.0 is the latest

No need to give usage I guess, it's pretty straightforward.
Source: readme.txt, updated 2012-09-27