• Alias: @.
• Structural element with built-in meaning.
• \[InvisibleApplication] is by default not visible on display, but is interpreted as function application.
• f @ x is interpreted as f @ x or f[x].
• \[InvisibleApplication] can be used as an invisible separator between functions or between functions and their arguments.
• See Section 1.10.4 and Section 3.10.5.
• See also: \[InvisibleSpace] , \[InvisibleComma] , \[RawAt] .