The Duration Value block is located in the data value drawer of the Blawx toolbox.
The Duration Value block is used to provide a specific duration value.
The duration value block is a value block, and can be placed anywhere that is expecting a value of the duration type. This is typically in date statement blocks.
A duration is a combination of a sign, and three numbers representing the years, months,
and days. If the sign is positive ("+"), the duration is "into the future." If the sign
is negative ("-"), the duration is "into the past." The idea "two months hence"
could be expressed using the values
+ 0 2 0. The idea "one year ago" could be expressed
using the values
- 1 0 0.
The use of durations including year and month values is not recommended, as they tend to behave in unpredictable ways, given that months and years are not of a consistent duration.