Documentation Support > Developers > ZAPKeep
Format: function ZAPkeep($x)
Explanation: When ZAP saves data values, it performs several transformations to ensure things work properly. This function takes that value and converts it back to the original status.
It is called by the (:keep:) markup and normally used in a textarea to create Magic Boxes. Magic boxes do not require double slashes to form line breaks, and leading spaces act as simple spaces.
$out and $in changes a double slash and line return to [[<<]] and a line return.
$htmlout and $htmlin convert ', ", spaces and the colon in :) to codes. Though it will display properly, these changes will be obvious when editing a page with such a text variable in it.