Did you know that the order of the float placement specifiers h, t, b and p, like in
|
1 2 3 4 |
\begin{figure}[hb] … \end{figure} |
has absolutely no effect? Thus [hb] is exactly the same as [bh]: both allow the float only to be placed “here” or at the bottom but not the top of a page nor on a float page.
The order of possible positions is hard-coded in the algorithm: 1. here, 2. top of this page, 3. bottom of this page, 4. float page, 5. top of next page and finally 6. bottom of next page.