is a global variable that specifies to what front end object, if any, the kernel is currently connected.
- $FrontEnd is either a FrontEndObject, or Null.
- You can use Options, SetOptions, and CurrentValue on $FrontEnd to read and set global options for the front end.
- Options set for $FrontEnd are by default stored in the file "FrontEnd/init.m" located in $UserBaseDirectory, and are persistent between front end sessions.
Introduced in 1996