Graphics Reference
In-Depth Information
53 in the last section. Our view entity has no pointers to associativity instances,
general notes, or text template entities and one pointer to a property (on directory
section line number 75).
In closing, we mention one other handy entity, the associativity instance entity
with number 402. There are a number of variants of it depending on the form number.
The so-called group associativities are particularly useful because they allow a col-
lection of a set of entities to be maintained as a single, logical entity. A common one
of these is the case where the form number is 1. This requires an (unordered) group
of back pointers as the parameter data. The general structure for its data is shown in
Figure C.13.
