> For the complete documentation index, see [llms.txt](https://stage-precision.gitbook.io/grid/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stage-precision.gitbook.io/grid/timeline/timeline-basics/working-with-layer-items.md).
# Working with Layer Items
Learn the common controls for Timeline Layer Items, including selecting, renaming, moving, resizing, locking, coloring, and deleting items.
Timeline Layers contain different types of **Layer Items**.
Depending on the Layer type, an Item can represent a single point in time or a time range with a defined duration.
Although the functionality of each Item depends on its Layer type, many common editing operations work in the same way throughout the Timeline.
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## Selecting Layer Items
Click a Layer Item to select it.
The selected Item is shown in the **Inspector**, where its exact properties and settings can be edited.
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## Renaming Layer Items
Double-click the name of a Layer Item to rename it.
The name can also be edited from the Inspector.
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## Moving Layer Items
Layer Items can be repositioned directly inside the Timeline.
Click and drag the Item to move it to another position in time.
For precise positioning, use the **Time** parameter in the Inspector.
Items that are **Locked** cannot be moved with the mouse.
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## Items with Duration
Some Layer Items occupy a time range rather than a single point.
These Items have handles at the beginning and end of the Item.
### Moving the Complete Item
Drag the middle of the Item to move the complete time range without changing its duration.
### Adjusting Start and End
Drag the handles at the beginning or end to adjust the time range.
Depending on the Layer type, changing these handles can have additional meaning.
For example, it may change the duration of a Motion, trim a media file, or define the active range of an Item.
Exact behavior is described on the corresponding **Layer Type** page.
### Precise Timing
Where available, the timing can also be entered directly in the Inspector using parameters such as:
* **Time**
* **Length**
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## Locked
Many Layer Items provide a **Locked** option.
When enabled, the Item can no longer be moved or resized accidentally with the mouse.
Its values can still be viewed and edited through the Inspector.
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## Colors
Layer Items can use colors to make different elements easier to identify inside the Timeline.
Color settings are available through the Item or Layer controls, depending on the Layer type.
Layers can also use **Colorize Blocks** to apply their color to the Items they contain.
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## Deleting Layer Items
Select a Layer Item and press:
**DEL**
to remove it from the Timeline.
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## Duplicating Items
Select an item and press:
**CTRL**** + ****D**
to duplicate it.
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## Layer-Specific Behavior
The editing concepts on this page describe the common interaction with Layer Items.
The actual functionality of an Item depends on its Layer type.
For example:
* an Audio Item can trim the section of an audio file being played
* a Motion Path uses its Length to define the duration of a transformation
* a Timed Trigger uses its time range to generate different Workflow Events
* a Trigger represents only a single point in time
See the individual **Layer Type** pages for the specific behavior and additional settings of each Item.
