MyContract3/ is the root-directory of the MyContract3 debug-target. A debug-target is host to one or more test-contracts.
MyContract3/contracts-dbg/basicTest/ is a test-contract directory. Each test contract must be placed in its own directory.
MyContract3/contracts-dbg/basicTest/basicTest.t.sol is the main Solidity file for the test-contract
MyContract3/contracts-dbg/basicTest/dbg.contract.json is the Sdbg configuration file for
basicTest. See Settings Window.
MyContract3/dbg.project.json is the global configuration file. It contains default settings for all test contracts. See the discussion about
(any) in Settings Window.