What are the files in .sass-cache for?

What are the files in .sass-cache for?

References

Reference NO 1

http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html

Reference NO 2

http://stackoverflow.com/questions/13656630/what-are-the-files-in-sass-cache-for

Reference NO 3

https://coderwall.com/p/fblqhg

Reference NO 4

https://drupal.org/node/1694836

Reference NO 5

https://github.com/rails/rails/issues/489

Reference NO 6

https://github.com/lindseybradford/pcpcMarkupStyles/pull/2

Reference NO 7

http://issues.liferay.com/browse/LPS-26939

Reference NO 8

https://groups.google.com/d/topic/compass-users/QXQp25KpIwU