hud-doc 14.10+17.10.20170619-0ubuntu3.1 (amd64 binary) in ubuntu focal

 Unity HUD is a heads-up-display interface for controlling the behavior of
 applications as well as Unity via typed-in commands. It provides access to
 all applications menu via a single central interface, in order to simplify
 application usage and make menus more accessible.
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 This package contains developer documentation.