The terminal identification string usually extracted from the environment variable TERM. Should contain values like xterm or rxvt-unicode.

A stream of input events. The transaction will succeed as soon as the next input event becomes available.

Note: Trying to read more than one event within the same transaction might be successfull, but might also lead to undesired behaviour as the transaction will block until all of its preconditions are fulfilled.

This transaction succeeds as soon as an interrupt occurs. Executing the transaction shall reset an interrupt flag maintained by a supervising background thread.

It is mandatory to regularly check this transaction in order to signal responsiveness to the background thread. The execution environment is otherwise advised to throw an UserInterrupt exception as soon as a second interrupt arrives and it sees a previous one unhandled.

This operation shall send a command to the terminal. It shall block when the buffer exeeded its capacity and unblock as soon as space becomes available again.

Note: All implementations must limit the size of the output buffer or the application is at risk of running out of memory when writing much faster than the terminal can read.

This operations flushes the output buffer. Whether it blocks or not until the buffer has actually been flushed shall be undefined (there might be other buffers involved that cannot be force-flushed so it is probably better to not give any guarantees here).

This operation shall return the latest known window size without blocking.

This operation shall return the current cursor position. It may block as depending on implementation it usually requires an in-band roundtrip to the terminal. Use it wisely.