# Zabbix Documentation 5.2

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manual:discovery:low_level_discovery:item_prototypes

#### 2 Item prototypes

Once a rule is created, go to the items for that rule and press “Create prototype” to create an item prototype. Note how macro {#FSNAME} is used where a file system name is required. When the discovery rule is processed, this macro will be substituted with the discovered file system.

Low-level discovery macros and user macros may be used in item prototype configuration and item value preprocessing parameters. Note that when used in update intervals, a single macro has to fill the whole field. Multiple macros in one field or macros mixed with text are not supported.

Context-specific escaping of low-level discovery macros is performed for safe use in regular expression and XPath preprocessing parameters.

Attributes that are specific for item prototypes:

ParameterDescription
New application prototype You may define a new application prototype.
In application prototypes you can use low-level discovery macros that, after discovery, will be substituted with real values to create applications that are specific for the discovered entity. See also application discovery notes for more specific information.
Application prototypes Select from the existing application prototypes.
Create enabled If checked the item will be added in an enabled state.
If unchecked, the item will be added to a discovered entity, but in a disabled state.
Discover If checked (default) the item will be added to a discovered entity.
If unchecked, the item will not be added to a discovered entity, unless this setting is overriden in the discovery rule.

We can create several item prototypes for each file system metric we are interested in:

Mass update option is available if you want to update properties of several item prototypes at once.