To rename a page within My Folder, do the following:
Select My Folder in the navigation area.
Locate the Custom Pages portlet. Initially, this is located on My Page. If the portlet has been removed, add it to the page.
Locate the page you want from the list in the Custom Pages portlet. Then select the Rename action.
The Rename Page dialog appears showing the selected page.
Specify a new name for the page and click OK.
Note: Note:The following characters are not allowed: backslash (\), forward slash (/), colon (:), asterisk (*), question mark (?), double quotation mark (“), less than (<), greater than (>), or period (.).