ICALPROPNAMES    = /BEGIN/i.r | /END/i.r | /CALSCALE/i.r | /METHOD/i.r | /VERSION/i.r |
    /ATTACH/i.r | /IMAGE/i.r | /CATEGORIES/i.r | /RESOURCERS/i.r | /CLASS/i.r |
    /COMMENT/i.r | /DESCRIPTION/i.r | /LOCATION/i.r | /SUMMARY/i.r | /TZID/i.r |
    /TZNAME/i.r | /CONTACT/i.r | /RELATED-TO/i.r | /UID/i.r | /PRODID/i.r | /NAME/i.r |
    /GEO/i.r | /PERCENT-COMPLETE/i.r | /PRIORITY/i.r | /STATUS/i.r | /COMPLETED/i.r |