Placeholders for variables can be used like any other variable in table and chart definitions and give you a lot of flexibility. By changing a placeholder, you change all tables and charts using this placeholder just by refreshing the report. We advise you to define a default banner containing placeholders. In case it is much easier to create a new banner variable instead of changing the banner variable you have used lots of times in your report, you can just create the new variable and change the placeholder.
This functionality is also useful when using (generic) report templates where you just need to use other variables in the banner of your tables.
Variable placeholders have a green icon.
To see how it works, please have a look at this video.