Drawing Shapes

[LGFN]

When I select any drawing object and accidently press ctrl+shift it converts
to a text box and maked me teribly confused. I can't undo it.

 

[John Wilson]

ctrl shift doesnt "convert the shape to a text box" it just insets an
insertion point for you to enter text on the shape. (you could just type with
the shape selected too)

All you need to do is click anywhere off the shape to "undo"

 

[LGFN]

Whenever I select it again it appears that funny border that comes up by
selected text-boxes, which makes me nervous when I DON'T want a text-box, all
I want is a regular box, (and, for what odd reason did Microsoft make this
feature that's not in Word or in any other Office program, is there some
benefit of it?).
Thanks for you're time.