#### 42.2.5 Adding a new configuration setting on the fly

Besides overriding existing settings in the configuration file, you can use a configuration-variable assignment to specify a persistent override for a setting that is not even present in your configuration file, provided both of the following are true:

- [Section] is listed as subject to overrides in one of Table 42-2 through Table 42-6.
- Key is a valid key for the section.

If the section is not listed, or the key is not valid for the section, the setting you specify is treated instead as an error, with value “0” (zero).

Previous Topic: 42.2.4 Assigning values to configuration variables

Next Topic: 42.2.6 Assigning a macro or variable to a configuration variable

Parent Topic: 42.2 Overriding settings with PI markers or macros

Sibling Topics:

42.2.1 Determining the extent of a configuration override

42.2.2 Overriding settings with configuration PI markers

42.2.3 Overriding settings with macros

42.2.4 Assigning values to configuration variables

42.2.6 Assigning a macro or variable to a configuration variable

42.2.7 Understanding fixed-key vs. variable-key settings

42.2.8 Overriding fixed-key configuration settings

42.2.9 Overriding variable-key configuration settings

42.2.10 Assigning HTML table and graphic groups with overrides