I'm having trouble understanding what this statement does:
define('FS_CHMOD_DIR', (0775 & ~ umask()));
This article describes FS_CHMOD_DIR -- https://wordpress.stackexchange.com/questions/253274/use-of-undefined-constant-fs-chmod-dir-assumed-fs-chmod-dir
However, I'm confused by: 0775 & ~ umask()
Could you help me make sense of this?