     "1.0"
 }
 $nl
-"You can access " { $vocab-link "sequences" } " inside infix expressions with the familiar " { $snippet "arr[index]" } " notation."
+"You can access " { $vocab-link "sequences" } " inside infix expressions with the familiar " { $snippet "seq[index]" } " notation."
 { $example
     "USING: arrays locals infix ;"
     "[let { 1 2 3 4 } :> myarr [infix myarr[4/2]*3 infix] ] ."
     "9"
 }
 $nl
-"You can create sub-" { $vocab-link "sequences" } " inside infix expressions using " { $snippet "arr[from:to]" } " notation."
+"You can create sub-" { $vocab-link "sequences" } " inside infix expressions using " { $snippet "seq[from:to]" } " notation."
 { $example
     "USING: arrays locals infix ;"
     "[let \"foobar\" :> s [infix s[0:3] infix] ] ."
     "\"foo\""
 }
+$nl
+"Additionally, you can step through " { $vocab-link "sequences" } " with " { $snippet "seq[from:to:step]" } " notation."
+{ $example
+    "USING: arrays locals infix ;"
+    "[let \"reverse\" :> s [infix s[::-1] infix] ] ."
+    "\"esrever\""
+}
+{ $example
+    "USING: arrays locals infix ;"
+    "[let \"0123456789\" :> s [infix s[::2] infix] ] ."
+    "\"02468\""
+}
 ;
 
 ABOUT: "infix"

! Copyright (C) 2009 Philipp Brüschweiler
! See http://factorcode.org/license.txt for BSD license.
USING: help.syntax help.markup math prettyprint locals sequences ;
IN: infix

HELP: [infix

"The " { $vocab-link "infix" } " vocabulary implements support for infix notation in Factor source code."
{ $subsections
    POSTPONE: [infix
    POSTPONE: INFIX::
}
"The usual infix math operators are supported:"
{ $list
    { $link + }
    { $link - }
    { $link * }
    { $link / }
    { { $snippet "**" } ", which is the infix operator for " { $link ^ } "." }
    { { $snippet "%" } ", which is the infix operator for " { $link mod } "." }
}
"The standard precedence rules apply: Grouping with parentheses before " { $snippet "*" } ", " { $snippet "/" } "and " { $snippet "%" } " before " { $snippet "+" } " and " { $snippet "-" } "."
