bills, warranties, receipts, official letters and etc.
before NS, every piece of documents were bundled together. it would
be a miracle to find anything dated 1 week back.
then i came out with folders, dumping the correspondences into a
few categories respectively.
only during the recent years, i put them all in one folder,
differentiating them by the alphabet of the companies names.
so how do u guys do your filings? i prob would want to adopt a
new/better method for the new year. 
