The central question is how can i convert a part of a dtx file to straight LaTeX.
In learning more about a package, I want to play with an example from a dtx? The output shows up in the pdf. The dtx, however has the code layed out like:
% \latexcommand % some text that prints % \morelatexcode
I cannot determine what packages are needed and why just removing the "% " does not work. The code i want to play with is from longtable.dtx, but there are other dtx files that have interesting examples that i would like to play with.