A method of defining customization for electronic content retrieved over an electronic connection (100, FIG. 1), which retrieves electronic content from a remote server (110) to a local client (102); edits the content at the local client by a user using a WYSIWYG editor, wherein said editor is a standard software used for displaying of content and wherein said editing does not require installation of software requiring user authorization; and automatically generates at least one customization definition based on said editing, said customization definition suitable for automatic applying to said content.