tek4010 Version 2 Release Notes
===============================

Version 2 introduces integrated terminal support based on pseudo terminals
(PTYs). The emulator can now be used interactively with local shells,
ssh, telnet and historical operating systems while preserving the behavior
of the original Tektronix terminals as closely as possible.

The goal of Version 2 is not to emulate a modern VT100 or xterm terminal.
Instead, tek4010 intentionally behaves more like an original Tektronix
storage tube terminal.

Important changes
-----------------

- All child processes are now executed through PTYs.

- tek4010 can directly execute commands such as

	tek4010 ssh system
	tek4010 telnet system
	tek4010 cat test.plt

- Starting tek4010 without arguments starts a local sh shell.

- The default shell environment now uses TERM=tek4014.

- Terminal handling and keyboard behavior are now much closer to the
  behavior of historical Tektronix terminals.

- Ctrl-D exits the local shell. After the child process has terminated,
  Ctrl-D closes the tek4010 window.

- Minimal line editing is supported. The delete key moves the cursor
  one character position to the left, allowing characters to be
  overwritten. This reproduces the behavior of the original terminals.

- The previous local arrow-key history handling has been removed.

- BREAK support has been added.

- screen, tmux and similar terminal multiplexers are now explicitly
  unsupported because they interfere with Tektronix graphics data.

Compatibility notes
-------------------

tek4010 is optimized for command-line operation, historical operating
systems and Tektronix graphics applications.

Full-screen terminal applications such as vi, curses programs or modern
terminal user interfaces are generally unsuitable because they assume
a modern cursor-addressable terminal rather than a persistent storage
tube display.