Primitive expression types

`=̀13`(ndexfile(index-entry "quote" "tt" main )quotedatum) syntax
`=̀13`'datum syntax
The quoting mechanism is identical to R⁴RS. Keywords (see section ), as numerical constants, string constants, character constants, and boolean constants evaluate ``to themselves''; they need not be quoted. $\Longrightarrow$
$\Longrightarrow$ unspecified error makeotherˆ`=̀13`

          gobblecr'"abc"     "abc""abc"      "abc"'145932    145932145932     145932'#t#t#t#t':key      :key:key       :key

Note: R⁴RS requires to quote constant lists and constant vectors. This is not necessary with STK.

`=̀13`(operator operand₁ … ) syntax
Identical to R⁴RS. Furthermore, operator can be a macro (see section ).

`=̀13`(ndexfile(index-entry "lambda" "tt" main )lambdaformals body) syntax
`=̀13`(ndexfile(index-entry "if" "tt" main )iftest consequent alternate) syntax
`=̀13`(ndexfile(index-entry "if" "tt" main )iftest consequent) syntax
`=̀13`(ndexfile(index-entry "set!" "tt" main )set!variable expression) syntax
Identical to R⁴RS.