MSWLogo is a programming language which is interpreted, based on the computer language Logo, with a graphical user interface (GUI) front end. It was developed by George Mills at the Massachusetts Institute of Technology (MIT). Its core is the same as UCBLogo by Brian Harvey. It is free and open-source software, with source code available, in Borland C++.
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. Simple GIF animations may also be produced on MSWLogo version 6.5 with the command
gifsave. The program is also used as educational software. Jim Muller wrote The Great Logo Adventure, a complete Logo manual using MSWLogo as the demonstration language.
MSWLogo has evolved into FMSLogo: An Educational Programming Environment, a free, open source implementation of the language Logo for Microsoft Windows. It is released under the GNU General Public License (GPL) and is mainly developed and maintained by David Costanzo.
MSWLogo, as of version 6.5b, supports many functions, including:
||Moves turtle forward for number of times specified|
||Moves turtle back for number of times specified|
||Turns turtle right for number of degrees specified|
||Turns turtle left for number of degrees specified|
|HOME||home||Home||Comes to screen center but does not clear the screen|
|CLEAN||ct cs||Clean||Clears the screen of trails but the turtle remains where it is without moving|
|CLEARSCREEN||CS||Clearscreen||Clears the screen of trails and comes to screen center|
|HIDETURTLE||HT||Hide turtle||Hides the turtle and aids viewing a clear drawing on the screen|
|SHOWTURTLE||ST||Show turtle||Shows the turtle after it is hidden from the screen|
|PENUP||PU||(set) Pen up||Sets the turtle to move without drawing|
|PENDOWN||PD||(resets) Pen||Resets to a drawing pen when ordered to move|
|CLEARTEXT||CT||Clear text||Clears all text in the command screen|
|CIRCLE||Circle||Makes a circle
|Pattern||pay||Pattern||Makes a pattern|
|Wikimedia Commons has media related to MSWLogo.|