23 Apr
1999
23 Apr
'99
12:47 p.m.
For smooth surfaces, and very recently applied permanent magic marker,
there's a well known trick among teachers for how to remove the permanent
magic marker that some newbie used on the dry-erase marker boards: just go
over the permanent magic marker with the dry-erase one! On whiteboards,
the dry-erase "ink" will dissolve and lift off the "permanent ink".