System Architect Definitions, Encyclopedia:"D:\DATA\SYSARCH\HCM\GEN_DATA\SUBJECT\V01\CURRENT\"
Time period for frequency (Class Attribute)
Class Name: "Repetitive Activity"
Derived: F
&Value Type: Length of Time
Optional: F
Unique: F
Const: F
Description: Time period to which the frequency relates (eg "day", "week").

Timepoint Association (Class)
Description: Association of interest between two "Timepoints".
Comment:
Types of association include:
A starts and ends before B starts
A starts before B starts and ends when B starts
A starts before B starts and ends after B starts but before it ends
A starts before B starts and ends when B ends
A starts before B starts and ends after B ends
A starts when B starts and ends when B starts
A starts when B starts and ends after B starts and before B ends
A starts when B starts and ends when B ends
A starts when B starts and ends after B ends
A starts after B starts but before it ends and ends before B ends
A starts after B starts but before it ends and ends when B ends
A starts after B starts but before it ends and ends after B ends
A starts when B ends and ends when B ends
A starts when B ends and ends after B ends
A starts and ends after B ends.

Source: post-CBS
State Type: F
&Abstract: F
Value: F

Timepoint Valued Characteristic (Class)
Description: "Subject Characteristic" whose value is specified by a "Timepoint"
Comment: For example: DoB.
Source: HcM QA
State Type: F
&Abstract: F
Value: F

Timepoint Valued Qualifier (Class)
Description: "Phenomenon Qualifier" whose value is specified by a "Timepoint"
Comment: For example: date from which the severity of a condition changed.
Source: HcM QA
State Type: F
&Abstract: F
Value: F

Timepoint (Class)
Description: "Reference Point" being a point or period in time.
Source: post-CBS
State Type: F
&Abstract: F
Value: F