On the errand · Scope, watch, take back or end the errand. · it acts
Element 89
Set limits the harness enforces, not its judgment.
allow and deny rules · sandbox · spend cap
First known
From a history
1996Java's original sandbox: untrusted applets run under the Security Manager's strict rules on local files.
JDK 1.0. The mechanism is verified; the year is not on the page.
Dated by a reputable history or a participant's own account. The source.
- ReadingValue
Specimen № 89 — operate freely
Click the places it mustn't touch to fence them off. Then set it working.
Fig. 89 — Fence
000 readings · idle
On the errand: its twin
The two series line up in pairs. Each act on a guess sits above the act that does the same thing to an errand, so Opt out and Fence are one move made on two kinds of thing.
Bodies
The act stays put while the hardware changes. These are some of the forms Fence takes.
- allow and deny rules
- sandbox
- spend cap