Run Length Encoded

The Run Length Encoded (or RLE for short) file format is commonly-used for storing large patterns. It is more cryptic than some other file formats such as plaintext and Life 1.06, but is still quite readable. RLE files are saved with a .rle file extension.

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Examples

The following is a glider in RLE format:

#C This is a glider.
x = 3, y = 3
bo$2bo$3o!

The following is the Gosper glider gun in RLE format:

#N Gosper glider gun
#C This was the first gun discovered.
#C As its name suggests, it was discovered by Bill Gosper.
x = 36, y = 9, rule = B3/S23
24bo$22bobo$12b2o6b2o12b2o$11bo3bo4b2o12b2o$2o8bo5bo3b2o$2o8bo3bob2o4b
obo$10bo5bo7bo$11bo3bo$12b2o!

External links

• Cellular automata file formats at Mirek's Cellebration
• RLE at the Life Lexicon