Layout names are used extensively throughout the calendar to reduce the number of scripts required. For instance, the "Collapse Side Bar.” script also patterncounts the names of the Calendar layouts so be sure to edit this script if you change any layout names.
Note: Tables Occurrence and Table Names are used extensively in scripts as well; you may modify file names as needed, but do not change table names or table occurrence names.
(Just don't include a "." within the last 4 characters of your file name: the dot before fp7 in the file name is fine, but something like MyCompany.com.fp7 is not.