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MIT 6.00 Intro Computer Science (OCW) 21 Online
OpenStudy (anonymous):

Hello, I met a annoying problem that the IDLE always creates a black dot when I press backspace and I can't delete it. does any smart guy know how to solve the problem ?

OpenStudy (e.mccormick):

I do not know why it would do a siplay artifact like that. I have never seein it do so. Does it show up on a screen shot of it?

OpenStudy (anonymous):

when I try to run my program, the error says there are several unexpected indented block. I think they are induced by the "black dot"....it looks like this....|dw:1378245980823:dw|

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