Bracket Forms

//$ Array expression (deprecated).
satom := "[|" sexpr "|]"

//$ Short form anonymous function closure.
satom := "{" sexpr "}"

//$ Grouping.
satom := "(" sexpr ")"
satom := "\(" sexpr "\)"
satom := "\[" sexpr "\]"
satom := "\{" sexpr "\}"

//$ floor and ceiling
satom := "\lceil" sexpr "\rceil"
satom := "\lfloor" sexpr "\rfloor"

//$ absolute value
satom := "\lvert" sexpr "\rvert"
satom := "\left" "|" sexpr "\right" "|"
satom := "\left" "\vert" sexpr "\right" "\vert"

//$ norm or length
satom := "\lVert" sexpr "\rVert"
satom := "\left" "\Vert" sexpr "\right" "\Vert"

// mediating morphism of a product <f,g>
satom := "\langle" sexpr "\rangle"
satom := "\left" "\langle" sexpr "\right" "\rangle"

// mediating morphism of a sum [f,g]
satom := "\lbrack" sexpr "\rbrack"
satom := "\left" "\lbrack" sexpr "\right" "\rbrack"