Most of the input forms for our plugin groups, events etc are based on metabox code. Our plugins are blocks, and a common form of block is the data entry form, which requires entry fields of various types (dates, time, text..). Each of these required validation of data length, and format, as well as a good means of data entry (for example – dates can be selected from date pickers, rather than typed). Metabox packages all this common code and allows us to simply inherit all the data input functionality, just customizing it for our own needs where necessary. Metabox is a required plugin for SiteWorks sites.