To go up the Bash history with <Page Up>

Just a stupid question for my knowledge. I love that feature of the SuSe distribution that allows to fetch all the instruction in .bash_history that startx with the few characters typed in shell followed with <Page Up>. I hope to have myself understood. This feature does not exist in other distributions like Debian. Question is: in what script is this feature encoded? It does not look to be in ~/.bashrc and what is the configuration line? -- Alain Barthélemy cassandre@bartydeux.be http://www.bartydeux.be Linux User #315631