Vensim Help

Keyword

Description

:AND:

Logical AND

:AT LEAST ONCE:

Relation must be true at least once for a Reality Check.

:CROSSING:

Lines must cross for Reality Check Consequence.

:END OF MACRO: †        

Marks the end of a macro definition

:EXCEPT:

Restricts which subscripts the current equation applies to.

:HOLD BACKWARD:

Specifies that data should be used by holding the last value

:IGNORE:

Ignore causes not yet used in an equation.  Also used in Reality Check.

:IMPLIES:

The implication portion of a Reality Check.

:INTERPOLATE:

Specifies that data should be interpolated between points

:IS:

Operator for assignment of string constants

:LOOK FORWARD:

For data look forward to the next value

:MACRO:

Begins a macro definition

:NA:

Special symbol denoting the missing value

:NOT:

Logical NOT

:OR:

Logical OR

:RAW:

Marks data as raw so :NA: is reported for missing values

:TEST INPUT:

Defines a test input equation for use with Reality Check

:THE CONDITION:        

Precedes the predicate condition of a Reality Check.