Unicode: 03C2. Alias: Esc fs Esc. Greek letter. Used in written Greek when σ occurs at the end of a word. Not commonly used in technical notation. Not the same as \[Stigma].

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: 2194. Alias: Esc <-> Esc. Infix arrow operator. x ↔ y is by default interpreted as LeftRightArrow[x,y]. Used in mathematics for various notions of equivalence and ...

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: 22A3. Alias: Esc lT Esc. Infix operator. x ⊣ y is by default interpreted as LeftTee[x,y]. x ⊣ y ⊣ z groups as (x ⊣ y) ⊣ z. Used in mathematics to indicate the lack ...

Unicode: 22B2. Infix ordering operator. x ⊲ y is by default interpreted as LeftTriangle[x,y]. Used in pure mathematics to mean 'normal subgroup of'.

Unicode: 266E. Letter-like form. Used to denote musical notes. Sometimes used in mathematical notation, often as an inverse of numbering operations represented by \[Sharp].

Unicode: 000A. Raw operator. Inserted whenever a raw newline is entered on the keyboard. Forces a line break in an expression, fixing the indenting level at the time when the ...

Unicode: 00A0. Alias: Esc nbs Esc. Spacing character. Generates a space with the same width as \[RawSpace], but with no line break allowed to occur on either side of it.

Unicode: F528. Alias: Esc pl Esc. Letter-like form. Used to indicate where expressions can be inserted in a form obtained by pasting the contents of a button. Not the same as ...