* means done.

A lot of...

See the etext documentation for unimplemented features.
Plus:

Make selection retrieval and search compatible with "get".
Make -verbose version of text "get" and friends.
Make per-instance information.
Make "block change" subcommand.
Make "block trim" subcommand.
Make layout data-driven instead of code-driven.
Mouse placement of insert could be better: now it is impossible to put
it before block.

Convert to pTk.
