fix typos
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@ -4,7 +4,7 @@
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@title{Panel}
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@definterface[panel:single<%> (area-container<%>)]{
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See @racket[panel:single-mixin%].
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See @racket[panel:single-mixin].
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@defmethod*[(((active-child (child (is-a?/c area<%>))) void?) ((active-child) (is-a?/c area<%>)))]{
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Sets the active child to be @racket[child]
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@ -17,8 +17,8 @@
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This mixin adds single panel functionality to an implementation of the
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@racket[area-container<%>] interface.
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Single panels place all of the children in the center of the panel, and allow
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make one child to be visible at a time. The
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Single panels place all of the children in the center of the panel, but allow
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only one child to be visible at a time. The
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@method[panel:single<%> active-child] method controls which panel is
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currently active.
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