gnuplot: insert custom xtic label amidst otherwise regular tic intervals

Question

I\'m actually using orgmode to export, so my data is simply in org-table form; that shouldn\'t matter. It\'s like so:

|  Time | Video | Presentation | Paper |
|-         


        

Answer 1

Shown with "Pi" in the documentation:

set xtics 0,5,40
set xtics add ("Event" 30)