This minimalist stele from the Musei Civici in Vicenza (originally from Nanto, Veneto) simply states the amount of space around it to be left free. Information from the museum says that it is from no later than the Caesarian Age.
P(edes)
·III
VACET
A
·FINE
Let 3 feet be left free from the edge.
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This inscription from Verona is more specific about what kind of violations it forbids, and also gives a little taste of the punishment one would receive. In the vaguest terms possible, really.
STERCVS
·INTRA
·
CIPPOS
·QVI
·FECERIT
AVT
·VIOLARIT
·NEI
·
LVMINIBUS
·FRUATVR
He who brings dung inside the marker stones or who violates them,
let him not enjoy life.
Watch out where you dump your dung! Romans are watching!