★★★★ALL Windows users, read this now!★★★★
14 years ago
General
Go into any directory at all and hit New Folder. Name it Con.
Did you do it? Good. Now go into MS Word and type in this string exactly as it appears:
=Rand(200, 90)
Hit enter.
MIND=BLOWN
Did you do it? Good. Now go into MS Word and type in this string exactly as it appears:
=Rand(200, 90)
Hit enter.
MIND=BLOWN
FA+

DOS had "special" files though, for example, any data written to a file named NUL would be automatically thrown away.
CON was one of these special files- when a program attempted to read from CON, the user would be able to type data in. One use for this is if a user wanted to quickly make a amall text file without needing to use an editor, they just needed to say `COPY CON FILENAME.TXT` and enter the text they wanted.
One consequence of this though is that users couldn't create legitimate files that had one of these special names, but it wasn't considered much of a matter. Folders had to follow the same naming scheme as files, which meant that folders couldn't use them too. Windows still owes a lot of it's archetecture to DOS, which means still that Windows can't use files named CON, NUL, AUX, LPT1, etc.
What does it do?
Type copy con nul and press enter.
Play around entering whatever you want. Commands, gibberish, doesn't matter. When you're bored, use CTRL-C to go back to normal
You can also try copy <filename> con at the command line.
In case you're curious:
CON = CONsole
NUL = NULl device
LPT0-LPT9 = Line Printer Terminal (aka parallel/"printer" port) #0-9
COM0-COM9 = serial COMmunications port #0-9
and I can't type in teh string... I don't have MS but Open Office
There is a also a car game hidden in excel.
Sadly, Microsoft now mandates that none of their software can have hidden features anymore. :(
It's a shame really. I can understand from a bug squashing perspective, but I like them. There is also microscopic art in the blank spaces on cpus. Those were pretty fun.