Tests whether an expression returns an empty value.

Toggles automatic clipping in a text mode window.

Determines whether the end of file was reached.

Defines a code block to execute if a runtime error occurs.

Sets the return code for an Xbase++ application.

Generates a new object of the error class.

Executes the program code contained in a code block.

Appends a string to the operating system's event log.

Calculates the value of e to the power of x