### TALLY

The TALLY module records obsevations to a specific tally. The observation is either an expression or is one of two specific functions : Interval or Between.

Interval : Records the time between some previous event (set with the Mark attribute prompt) and TNOW the current simulation time.

Between : Stores the time between entities arriving at this module.

Prompt | Valid Entry | Default
Tally name | Individual Tally, Tally Set Member, Static Name, Attribute, Expression. | Individual Tally
Tally | Symbol Name [Tallies] | Required
Tally Set | Symbol Name [Tally Sets] | Required
Set Index | Expression truncated to Integer (Attributes) | Required
Static | Symbol Name [Statics] | Required
Attribute | Symbol Name [Attributes] | Required
Expression | Expression | Required
Type of Statistics | Interval, Between, Expression | Interval
Attribute | Symbol Name [Attributes] | Required

Examples

Prompt | Value
Tally Name | Individual Tally
Tally | Time in System
Type of Statistics | Interval
Attribute | TimeIn

Each time an entity arrives at this module the value of (TNOW - TimeIn) is recorded in the Tally Time in System. TimeIn (an entity attribute) must have been set earlier at a Mark Attribute prompt.