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Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes. These characters are characterized by being designed to be connected horizontally and/or vertically with adjacent characters, which requires proper alignment.
In graph theory, a tree is an undirected graph in which any two vertices are connected by exactly one path, or equivalently a connected acyclic undirected graph. [1] A forest is an undirected graph in which any two vertices are connected by at most one path, or equivalently an acyclic undirected graph, or equivalently a disjoint union of trees.
For example, "customer places order." Context diagrams can also use many different drawing types to represent external entities. They can use ovals, stick figures, pictures, clip art or any other representation to convey meaning. Decision trees and data storage are represented in system flow diagrams.
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The main meaning of grove is a group of trees that grow close together, generally without many bushes or other plants underneath. It is an old word in the English language, with records of its use dating as far back as the late 9th century as Old English grāf, grāfa ('grove; copse') and subsequently Middle English grove, grave; these derive from Proto-West Germanic *graib, *graibō ('branch ...