Top of text box moves up when typing new text exceeds box width.

Question

Using iWork 09 I set a text box on a master and mark it as Format/Advanced/Define as text placeholder. In the Text Inspector, I set parameters as left justified, align text to bottom, line spacing = 1, and other numerical parameters to 0. Then, on a new slide using this master, the top of the text box moves up to accommodate additional text and it would be seem more natural for the bottom of the box to extend DOWN instead.  What am I missig here?

Answer 1

it would be seem more natural for the bottom of the box to extend DOWN instead.  What am I missig here?
No it wouldnt. If you understand that, align to bottom, fixes the last character in the bottom line to the bottom right hand corner of the text box, the text then flows from that corner as you add extra text.
You cant have align to bottom and have the text flow from the top, you need to choose between the three options.
If you want to add extra lines without the box moving; use align to top.
If you want to align the text to the bottom of the box; use align to bottom.
I set parameters as left justified,
There is no such thing as left justified.   You need to choose between justified or left align, these are two different alignment methods, text is either left aligned, right aligned or justified, not a combination of them.