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Re: LOGO-L> Berkeley Logo



Michael Tempel (michaelt@media.mit.edu)
Mon, 20 Jan 1997 10:54:00 -0500

>Under Berkeley Logo (for DOS), I expect the following commands will draw
>a square and then clear it. Actually the four sides of the square are
>cleared but the four coners remain visible. Why?
>
>TO SQ
> REPEAT 4 [ FD 120 RT 90]
>END
>SQ
>PENREVERSE
>SQ

Isn't the dot at each corner being drawn twice, once before the turn and
again after it? In PENREVERSE mode the second would undo the first.

Michael Tempel tel: 212 579 8028
Logo Foundation fax: 212 579 8013
250 West 85th Street michaelt@media.mit.edu
New York NY 10024
http://el.www.media.mit.edu/groups/logo-foundation/

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