After executing the command, the User is asked to choose
1 - for plotting regression coefficients in separate png files, saved in the temporary directory, and moreover, to paste them into one big plot (also saved as a png file in the temporary directory),
2 - for plotting p-values for t-test of statistical significance for regression coefficients from applied models, in separate png files, saved in the temporary directory, and moreover, to paste them into one big plot (also saved as a png file in the temporary directory).
Chosing 0 exits the plot
command.
If non.interactive=TRUE
all the above plots are made.