Why does my laptop have tablet pc settings?

I have a Gateway M-1625 Notebook that my parents bought me last year. I was just changing the settings for my personal use, and while doing that I found a whole bunch of settings for a tablet pc. I was wondering why those settings are there. Does every laptop have the same settings, even though it's not a tablet pc? If not, is there a way my laptop could be able to have touch screen capabilities (a special digitizer pen or something like that)? Thanks in advance!