Feature request: delimit pan extent

[andy]

Dear mapserver developers,
I would like to have in mapserver "delimit pan extent" feature without
using scripting. Often I make webmap for small area terrains, and if you
pan again and again you will go in uniform background area, because you
will not find any more features. I know that a normal user will
understand that he is at the end of the map, but I would like to have
the possibility to set these properties.


Thank you for all your great work,

Andrea