Unicode: F74E. Alias: Esc ii Esc. Letter-like form with built-in value.  is interpreted by default as the symbol I, representing Sqrt[-1].

Unicode: F523. Alias: Esc => Esc. Infix operator with built-in evaluation rules. x  y is by default interpreted as Implies[x,y]. x  y  z groups as x  (y  z). Not the ...

Unicode: 221E. Alias: Esc inf Esc. Letter-like form with built-in value. ∞ is interpreted by default as the symbol Infinity.

Unicode: 22C2. Alias: Esc inter Esc. Infix operator with built-in evaluation rules. x ⋂ y is by default interpreted as Intersection[x,y]. The character ⋂ is sometimes called ...

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: F360. Alias: Esc is Esc. Spacing character. \[InvisibleSpace] is by default not visible on display, but is interpreted on input as an ordinary space. ...

Unicode: 03DF. Aliases: Esc ko Esc, Esc koppa Esc. Special Greek letter. Analogous to English q. Appeared between π and ρ in early Greek alphabet; used for Greek numeral 90.

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: 00AB. Alias: Esc g<< Esc. Letter-like form. Used as opening quotation marks in languages such as Spanish. Not the same as \[LessLess]. Not the same as ...

Unicode: F76B. Alias: Esc [ Esc. Letter-like form. Used in documenting control and command characters. key\[LeftModified]char\[RightModified] is used to indicate that char ...