Function to Loop on a list retrieving value, faster then a FOR statement

Author: henryhamon

COSQuickRef.md

@@ -90,6 +90,7 @@ A list of some common ObjectScript expressions
 | Display string after replacing characters                | `Write $translate(string, searchChars, replaceChars)`         |
 | Build a list                                             | `Set listString = $listbuild(list items, separated by comma)` |
 | Retrieve an item from a list                             | `Set variable = $list(listString, position)`                  |
+| Retrieves elements sequentially from a list              | `Set pointerToNextElement = 0`<br> `While = $ListNext(listString, pointerToNextElement, value) {}` |
 | Put item into list string                                | `Set $list(listString, position) = substring`                 |
 | Display the length of a list                             | `Write $listlength(listString)`                               |
 | Search a value in a list                                 | `Write $listfind(listString, value)`                          |