Force Firefox to reload the page and ignore cache copies of the page

This isn't really a full blog posting. Just a thought. I am frequently using other machines or installing systems. Internet Explorer will allow you, through the GUI,  the ability to "Check for new versions of stored pages" off the General Tab. However, Firefox doesn't seem to offer this function through a GUI. To get to it you have to do the following:

In the address bar if Firefox type:

about:config

It will load a config page. In the filter at the top of the page filter for:

browser.cache.check_doc_frequency

Change the value to: 1

Possible settings are:
3 - only check if it seems outdated (Default Setting)
2 - always use cached version
1 - always check for newer version
0 - check for newer version once per session