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In Scratch 1.4, an *.sb file was the file format used to store projects. [67] An *.sb file is divided into four sections: "header", this 10-byte header contains the ASCII string "ScratchV02" in versions higher than Scratch 1.2, and "ScratchV01" in Scratch 1.2 and below "infoSize", encodes the length of the project's infoObjects.
Example: For the turtle photograph above, the code reads: [[File:Painted turtle.jpg|thumb|220px|left|alt=An adult painted turtle specimen pointed toward the viewer with its head raised and facing towards its right.|A painted turtle (this image looks good in [[Painted turtle|the article]]).]]
Turtle graphics were added to the Logo language by Seymour Papert in the late 1960s to support Papert's version of the turtle robot, a simple robot controlled from the user's workstation that is designed to carry out the drawing functions assigned to it using a small retractable pen set into or attached to the robot's body.
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Scratch is a visual language with the goal of teaching programming concepts to children by allowing them to create projects such as games, videos, and music. It does this by simplifying code into function "blocks" that can be dragged and connected, then run by clicking the green flag icon.
Turtle graphics are often associated with the Logo programming language. [2] Seymour Papert added support for turtle graphics to Logo in the late 1960s to support his version of the turtle robot, a simple robot controlled from the user's workstation that is designed to carry out the drawing functions assigned to it using a small retractable pen set into or attached to the robot's body.
Small Basic includes a "Turtle" graphics library that borrows from the Logo family of programming languages. For example, to draw a square using the turtle, the turtle is moved forward by a given number of pixels and rotated 90 degrees in a given direction. This action is then repeated four times to draw the four sides of the square.
MSWLogo supports multiple turtle graphics, 3D computer graphics, and allows input from ports COM and LPT. It also supports a Windows interface, so input/output (I/O) is available through this GUI, and keyboard and mouse events can trigger interrupts.