I have seen several programmers present their *.pd files as lines of code as in the following:

#N canvas 0 0 695 598 10;
#X obj 226 263 osc~;
#X obj 237 59 noise~;
etc., etc.

The most recent situation is with obiwannabe's "Introduction to synthesis" found here:
http://obiwannabe.co.uk/tutorials/html/intro_games_synthesis.html
Super helpful stuff! Since I am a noob in the grandest sense, I have yet to discover how to load the examples given as links in the tutorial into Pd-extended.
Could anyone kindly shed light on a solution? Your help would be much appreciated!

Thank you so much, Gromit! Loaded the code into Notepad++ saved it with the extension *.pd and works great. Your input is gratefully apprecciated.
I noticed Obiwannabe also has a link on the afore mentioned page which offers a *.tar file with all of the necessary *.pd files for the tutorial. His ability to dance through the myriad of variables with such casual ease and communicate complex concepts is a real service to all involved with PD.