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DASHED LOW LINE U+FE4D: Pc, connector ... REFERENCE MARK U+203B: Po, other Common ... DOTTED CROSS U+205C: Po, other Common ⁝ TRICOLON
The dashed lines represent contours of the velocity field (streamlines), showing the motion of the whole field at the same time. (See high resolution version.) Solid blue lines and broken grey lines represent the streamlines. The red arrows show the direction and magnitude of the flow velocity.
Type E lines indicate hidden outlines of internal features of an object. These are dotted lines. 2H pencil; Type F lines are Type E lines, except these are used for drawings in electrotechnology. 2H pencil; Type G lines are used for centre lines. These are dotted lines, but a long line of 10–20 mm, then a 1 mm gap, then a small line of 2 mm ...
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.
A stop line is always represented by a white thick traversal continuous line, but a give way line may be represented by a white thick dashed line as rectangles (Germany, France, Spain) or by a double-dashed line (United Kingdom) or by a white line of triangles (Austria, Italy, Liechtenstein, the Netherlands, Norway, and Switzerland).
A double yellow center line in the United States indicates that passing is prohibited California (foreground) paints a black line to help drivers see a double yellow line, while Nevada (background) does not. A yellow line (solid or dashed) indicates that crossing the line will place a driver in a lane where opposing traffic is coming at the driver.
Expressing resonance when drawing Lewis structures may be done either by drawing each of the possible resonance forms and placing double-headed arrows between them or by using dashed lines to represent the partial bonds (although the latter is a good representation of the resonance hybrid which is not, formally speaking, a Lewis structure).
Wire crossover symbols for circuit diagrams. The CAD symbol for insulated crossing wires is the same as the older, non-CAD symbol for non-insulated crossing wires. To avoid confusion, the wire "jump" (semi-circle) symbol for insulated wires in non-CAD schematics is recommended (as opposed to using the CAD-style symbol for no connection), so as to avoid confusion with the original, older style ...