External symbol ID and name relationships

The following table summarizes the ESDIDs of items and their "Parent ESDIDs". Terms like "SD ESDID" can be abbreviated as "SDID", and so forth.

Table 1. Relationship of an element's ESDIDs and parent ESDIDs
If this ESD Item is:	Then its ESDID is:	And its Parent ESDID is:	And, the External Name defines a:
SD	SDID	zero	Section name
ED	EDID	SDID	Class name
LD	LDID	EDID	Label name
PR	PRID	EDID	Part name
ER	ERID	SDID	External name

These "parentage" relationships can also be viewed pictorially:

Note: ESDIDs must be defined before they appear in any referencing field.