Is there possible to add a delete button to save/load UI?

[Mishasama]

It could be nice if add more buttons like the pak128.german's.

[makie]

in the simuconf.tab add
show_delete_buttons = 1

[Mishasama]

in the simuconf.tab add
show_delete_buttons = 1

Is there possible to put this file into the document folder? Otherwise, it will be overwritten whenever update.

[makie]

yes, create a file simuconf.tab in the "simutrans" folder (where the save folder is)
with only content "show_delete_buttons = 1"

usefull other parameters in this file:

# save the current game when quitting and reload it upon reopening
reload_and_save_on_quit = 1


# display (screen/window) width
# also see readme.txt, -screensize option
display_width  = 1800

# display (screen/window) height
# also see readme.txt, -screensize option
display_height = 1100

# show full screen
#fullscreen = 0