- opcode-arguments pairs. It is terminated by opcode TTY_OP_END (0).
- Opcodes 1-127 have one-byte arguments. Opcodes 128-159 have integer
- arguments. Opcodes 160-255 are not yet defined, and cause parsing to
- stop (they should only be used after any other data).
+ * opcode-arguments pairs. It is terminated by opcode TTY_OP_END (0).
+ * Opcodes 1-127 have one-byte arguments. Opcodes 128-159 have integer
+ * arguments. Opcodes 160-255 are not yet defined, and cause parsing to
+ * stop (they should only be used after any other data).
+ *
+ * The client puts in the stream any modes it knows about, and the
+ * server ignores any modes it does not know about. This allows some degree
+ * of machine-independence, at least between systems that use a posix-like
+ * tty interface. The protocol can support other systems as well, but might
+ * require reimplementing as mode names would likely be different.
+ */