# Io Reference

Core / Core / Sandbox

|  | Sandbox can be used to run separate instances of Io within the same process.
|  | doSandboxString(aString) Evaluate aString inside the Sandbox. messageCount Returns a number containing the messageCount limit of the Sandbox. printCallback(string) default implementation is; method(string, string print) setMessageCount(anInteger) Sets the messageCount limit of the receiver. setTimeLimit(aDouble) Sets the time limit of the Sandbox. timeLimit Returns a number containing the time limit of calls made to the Sandbox.