Thanks for reply.
In fact I used print(variable) system in R (before I found Sci-views), but I was always craving for the possiblity to have a graphical interface allowing to follow values of selected variables line by line - usually the error was caused by some problem well before the line causing program crashed. So having IDE with this capabilities would be nice.
There is no danger that I would become a programming expert enjoying the beauty of the solutions. Too late for me. For me it will be always a mean to get the things done. Is the code ugly? Is it slower than necessary? I don`t care, it works and I can use the output for solving the relevant biology. Are there some general programming tips for the Seekers Of The Way Of The Lowest Resistance like me :-)?