Variables are promises that can be defined in any promise bundle. Users can create their own [variables][Variables].

To see all of the variables defined on a particular host, run

$ cf-promises --show-vars

as a privileged user. See Classes for an explanation of the tags.

CFEngine includes the following special variables:

• [const][const]
  Variables defined for embedding unprintable values or values with special meanings in strings.

• [edit][edit]
  Variables used to access information about editing promises during their execution.

• [match][match]
  Variable used in string matching.

• [mon][mon]
  Variables defined in a monitoring context.

• [sys][sys]
  Variables defined in order to automate discovery of system values.

• [this][this]
  Variables used to access information about promises during their execution.