Each META ACTIVITY
| must be activity with one or more META CHANGE ACTIVITY STATE | |
| may be qualified by one or more META ACTIVITY QUALIFIER | |
| may be carried out at one and only one META ACTIVITY SITE | |
| may be comprise qualification of one or more META DIRECT ACTIVITY QUALIFIER | |
| may be related to one or more META PERSON PROPERTY QUALIFIER | |
| may be user of one and only one META RESOURCE USAGE | |
| may be activity for one and only one META ROLE IN ACTIVITY |