clear command takes in arguments

[andreatanky]

I typed "clear 3" and all patients are cleared, despite a different format from the UG.

[nus-se-bot]

Team's Response

We do agree that this is an unintended behaviour, but it should not affect the use of the command greatly.

Items for the Tester to Verify

:question: Issue severity

Team chose [severity.Low] Originally [severity.Medium]

• [ ] I disagree

Reason for disagreement: [replace this with your reason]

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