Glossary
- Arrow Key
- in Normal Mode. Right, Left, Up, Down
- Chase Lights
- A row of pixels at the periphery of the display that are illuminated in a sequence to give the impression of lights chasing each other around the edge display.
- Child
- A message that has a parent. All messages but the top of the hierarchy are child messages.
- Command
- A command causes some action beyond simply displaying a message. A command is associated with a message. It may be in the hierarchical data representing the message, or may be in hidden text.
- Display
- (noun) The area on the face of the LEDybug that has a variable, visible image, including text.
(verb) To “display a message” is to cause the message to appear in the display. - Forth
- A programming language invented by Charles Moore characterized by separate parameter and return stacks; and by code which can be interpreted directly as well as compiled.
- Hidden Text
- Text in a message that is not normally displayed. The text is delimited by braces: "Normal {Hidden}." Enables variable display, commands, initialization.
- Hierarchy
- A collection of messages and parent/child relations. A message can have zero or more child messages. If a message has one or more child messages, it is a parent. One message at the top of the hierarchy is the parent, directly or indirectly, of all other messages in the hierarchy.
- Initialization
- xxx
- LEDybird
- A PC application that simulates the LEDybug and communicates with a LEDybug by USB.
- LEDybug
- A handheld, battery powered LED display device.
- List
- A hierarchy or sub-hierarchy coded for permanent storage.
- ListUser
- xxx
- ListSys
- xxx
- Menu
- xxx
- Message
- An ASCII text string. The unit of text that is scrolled repeatedly by the LEDybug. A message may have children (in a hierarchy) or a command.
- Next
- key in Normal and xx Mode
- Parent
- A message that has one or more child messages.
- Previous
- key in Normal and xx Mode
- Scroll
- (verb) To move text across a display so that it may be read as it moves.
- Search
- xxx
- Search Argument
- xxx
- Sibling
- The relation of two messages that have the same parent.
- Sub-hierarchy
- Part of a hierarchy comprised of a given message and all of its children, direct and indirect.
- Tack On
- (verb) To temporarily attach one or more messages as a children to another message. See Reference Manual » LEDybug.
- Tag
- xxx
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