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|Release Date||11Oct03 — 2003/10/11|
Scratch 11Oct03, created on October 11, 2003, was the first version of Scratch. It was not released to the public until long after its creation. Scratch 11Oct03 saves files by using the .scratch file extension, as opposed to the .sb file extension used in Scratch 1.x. Scratch 11Oct03 is sometimes also called Scratch 0.1. It had a very different layout, with the script area on the bottom-right, the blocks palette above it, the categories which were selected using a dropdown menu, and the stage on the left side, which could be resized.
As Scratch 11Oct03 was the first release of Scratch, all features were new. Scratch 11Oct03 had seven sprite categories: control, file, math, motion, mouse/keyboard, scripts, sensing, testing (which included comparison and boolean operator blocks), and variables. Scratch 11Oct03 contained a total of 46 blocks, which is small compared to Scratch 3.0 containing over 125 blocks (not including extensions). There were three kinds of objects including the sprite, sound, and imagebox. Unlike the December 2003 version, sensor boards were not implemented yet. Additionally, blocks like "goto " that have separate inputs for X and Y in newer versions only had one input, which was set by using a crosshair to select a position. This could be circumvented by using the "point x  y " reporter in the "math" block category. Also, a "copy" block existed in the "math" block category, which made a clone of an object directly on top of the original.
Unlike newer versions of Scratch that used reporter stage monitors, Scratch 11Oct03 simply provided pre-defined variables. The variables "x", "y", "layer", "heading", "width", "height", "xScale", "yScale", "transparency", "penDown", and "penSize" were created by default and could not be deleted, holding values defined by the blocks associated with them. Additional variables could still be created and deleted manually. Similarly to Scratch 3.0, the "set [x] to " block utilizes a dropdown to select which variable to change. Note the lack of a "change [x] by " block.
- Main article: Scripts (category)
Procedures, or "scripts" as they are called in the Scratch 11Oct03 editor, are Scratch 11Oct03's equivalent of "My Blocks" in Scratch 2.0 and 3.0. Procedures in Scratch 11Oct03 can be renamed, input parameters can be added to them, and buttons can be created for them. Such procedures also make use of the "answer " block, which returns the value specified in the input. These procedures can be used as reporters or be run independently, and they can check if other procedures are running. Procedures can also be started and stopped individually. To access these options in Scratch 11Oct03, one must right-click a hat block.
|Note:||"Scripts" in this section are not the same as the collections of attached blocks called scripts. For information about those, see Scripts.|
Although Scratch 11Oct03 does not have support for sprite costumes, the file blocks in the "file" block category of the editor give the user the ability to replace the current sprite's image with the file specified. For example, if the current image of a certain sprite was a cat, and a "load [dog.png]" block was used, the sprite would change its image to that of a dog (if a file labeled "dog.png" existed in the same directory as Scratch 11Oct03). The "save " block would save the current sprite image to the specified file.