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# TruClient - Web environment asynchronous functions

The following environment functions are available:

Function | Description
--- | ---
IOA.createDir | Creates the specified folder.
IOA.delete | Deletes the specified folder or file.
IOA.isExist | Checks the existence of a specified folder or file.
IOA.read | Returns all the data from the specified file. Converts the data from the specified charset to unicode.
IOA.write | Writes the string to the specified file.
TCA.getAttr | Returns the value of the command line parameter passed to the test, or its default value.
UtilsA.getEnv | Returns the value of the specified environment variable.
UtilsA.import | Evaluates the specified JavaScript file in the arguments context.
UtilsA.isEnvExists | Checks existence of a specified environment variable.
UtilsA.setEnv | Sets the named environment variable to the specified value.

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