Unicode: 222B. Alias: Esc int Esc. Compound operator with built-in evaluation rules. ∫ f  x is by default interpreted as Integrate[f,x]. ∫_a^b f  x is by default ...

Unicode: F76D. Alias: Esc @ Esc. Structural element with built-in meaning. \[InvisibleApplication] is by default not visible on display, but is interpreted as function ...

Unicode: F765. Alias: Esc , Esc. Structural element with built-in meaning. \[InvisibleComma] is by default not visible on display, but is interpreted on input as an ordinary ...

Unicode: 2190. Alias: Esc <- Esc. Infix arrow operator. x ← y is by default interpreted as LeftArrow[x,y]. Sometimes used in computer science to indicate assignment: x gets ...

Unicode: F603. Alias: Esc l| Esc. Matchfix operator.  x  is by default interpreted as BracketingBar[x]. Used in mathematics to indicate absolute value (Abs), determinant ...

Unicode: 301A. Alias: Esc [[ Esc. Compound operator with built-in evaluation rules. m〚i,j,… 〛 is by default interpreted as Part[m,i,j,…]. Sometimes used in mathematics to ...

Unicode: F761. Uninterpretable element.  n  is used on output to indicate n omitted pieces in an expression obtained from Short or Shallow. \[LeftSkeleton] indicates the ...

Unicode: F7D9. Infix operator with built-in evaluation rules. x  y is by default interpreted as Equal[x,y] or x==y. \[LongEqual] is drawn longer than \[RawEqual]. Used as an ...

Unicode: 205F. Alias: Esc ␣␣ ␣ Esc. Spacing character. Width: 4/18 em. Interpreted by default just like an ordinary \[RawSpace]. Sometimes used in output as a separator ...

Unicode: F382. Alias: Esc -␣␣  Esc. Negative spacing character. Used to bring characters on either side closer together. Width: -3/18 em. Interpreted by default just like an ...