# Vertical space at the bottom of a page

I was thinking that vertical space added with \vspace or \addvspace was removed at begin or end of page. The following code do not add space at the top of the page but add space at the bottom.

\documentclass[a6paper]{article}
\usepackage[showframe]{geometry}
\begin{document}
\vspace{1cm}
blabla.
\vfill
blabla.
\vspace{1cm}
\end{document}


In the latex2e.pdf documentation file, we can find this.

LaTeX removes the vertical space from \vspace at a page break, that is, at the top or bottom of a page. The starred version \vspace*{...} causes the space to stay.

I would like LaTeX to remove this space at the bottom of the page as expected.