how to remove a ubuntu package from manual install list without actually remove it?

Question

whenever you install a package in ubuntu, it is added to manual install and the system will make sure it is updated and configured correctly. but i cannot find a way to remove the packages from the manual install list.

i want to do this so i let the package system to take care of that package and remove it when it is unnecessary to my system.

thanks, David

Answer 1

The answer, as with most debian based package questions, is Aptitude.

sudo aptitude 
/(package name here)
hit n until you find the correct package.
M marks it as auto.
m marks it as manual.
those options are also in the "Package" menue.

Answer 2

sudo aptitude markauto PACKAGE_NAME