2020.1

Unknown tasks
An Unknown task is a task location that is not linked to any existing known task. Unknown
tasks can have multiple causes:
l Cutting an input or output task will replace it with an Unknown task. See "Cutting, copying
and pasting tasks and branches" on page874.
l Creating a new branch will create an Unknown output task in that branch. See "Adding
tasks" on page301.
l Using Branch From Here... will create an Unknown output task below that branch. See
"Adding tasks" on page301.
l Opening a configuration that contains additional plugins that are not installed on that
system will cause these plugins to be replaced by Unknown tasks. Installing the
additional plugins and re-opening the configuration will restore the plugins and their
properties.
l
Opening a configuration that contains plugins only available in PReS Workflow (such as
Create PDF) from a PReS Watch installation will cause these plugins to be replaced by
Unknown tasks. Opening the configuration in a PReS Production or Office installation or
upgrading PReS Watch to PReS Workflow and re-opening the configuration will restore
the plugins and their properties.
About variables
A variable is basically a keyword that points to specific location in your computer's memory.
This location contains data that you decide to place in it, by assigning that data to the variable
name.
There are four types of variables that can be used in PReS Workflow:
l
Global variables are available to all processes and tasks within the configuration, and
any modification made to them affects all tasks and configurations. For more information
see "Global variables" on page711.
l
Local variables are specific to an instance of a process. That is to say, when a process
changes the information in a local variable, it changes it only for that process and only for
that specific instance of the process. For more information see "Local variables" on
page709.
Page 702