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 ...

Unicode: 227A. Infix ordering operator. x ≺ y is by default interpreted as Precedes[x,y]. Used in mathematics to indicate various notions of partial ordering. Often applied ...

Unicode: 002A. Raw operator. Equivalent to the ordinary ASCII character with code 42. In addition to one-dimensional uses, x^* is by default interpreted as SuperStar[x]. x^* ...

Unicode: 005E. Raw operator. Equivalent to the ordinary ASCII character with code 94. In addition to one-dimensional uses, OverscriptBox[x, ^] is by default interpreted as ...

Unicode: 00AE. Alias: Esc rtm Esc. Letter-like form. Used as a superscript to indicate a registered trademark such as Mathematica. Typically used only on the first occurrence ...

Unicode: 21B5. Alias: Esc ret Esc. Letter-like form. Representation of the return or newline character on a keyboard. Used in showing how textual input is typed.