Work with blocks, groups, and worksessions
Blocks, groups and worksessions are methods for organizing model elements.
Work with blocks
Blocks are named groups of objects that act as a single object in your model. Blocks are useful for repeated objects such as symbols or components. Blocks save you time since you can reuse the components instead of re-drawing them each time. An advantage of using blocks for repeated content is that using blocks requires less memory. In addition, you can redefine a block and all of the instances placed in the model will update.
![](../image/command_icons/block.png)
Block
Define a block object.
![](../image/command_icons/blockedit.png)
BlockEdit
Allow selecting a block instance to change the block geometry and update the block definition.
![](../image/command_icons/blockmanager.png)
BlockManager
Opens the Block Definitions panel for managing the block definitions in the model.
![](../image/command_icons/_no_toolbar_button.png)
CopyLinkedBlockDefinition
Copy a linked block with Reference style layers.
![](../image/command_icons/explodeblock.png)
ExplodeBlock
Explode a block including any nested blocks into component objects.
![](../image/command_icons/export_save_rt.png)
Export
Save selected objects to a new file.
![](../image/command_icons/exportwithorigin_rt.png)
ExportWithOrigin
Save objects to a new file with a specified origin and construction plane.
![](../image/command_icons/insert.png)
Insert
Insert block objects stored in the file or import a file as a block definition.
![](../image/command_icons/modelbasepoint.png)
ModelBasepoint
Set a world origin that is used when inserting the model into another.
![](../image/command_icons/replaceblock.png)
ReplaceBlock
Replace block instances with a different block definition.
Work with groups
Grouping objects allows selecting multiple objects by picking one of the group components. Groups can be nested and named.
![](../image/command_icons/group.png)
Group
Organize objects into a single component.
![](../image/command_icons/addtogroup.png)
AddToGroup
Add an object to a selected group.
![](../image/command_icons/removefromgroup.png)
RemoveFromGroup
Detach objects from their parent group.
![](../image/command_icons/ungroup.png)
Ungroup
Remove the group status from objects.
![](../image/command_icons/setgroupname.png)
SetGroupName
Name a group.
Use worksessions
Worksessions allow multiple users to access the same models to use as reference geometry. A worksession is a list of models that can be viewed, snapped to, copied from and otherwise used as a reference for working on the active model.
![](../image/command_icons/worksession.png)
Worksession
Manage a list of models that can be used as reference geometry.