Lets you select a Data-Block (such as a material) in order to link it to something else (such as an object).
Shows an icon indicating the data-block type. Clicking the image or the down arrow opens the popup menu. Dragging the image lets you apply the data-block to something else (for example, you can drag a material onto an object in the 3D Viewport, or onto a 数据ID field).
Displays, and allows editing of, the name of the selected data-block. If a name is already in use by a different data-block, Blender will append a number like ".001".
Displays the number of users of the data (if there's more than one user). Clicking it will create a single-user copy.
As an example, if three separate objects referenced the same material, the material's user count would be 3. Changing the material would affect all three objects. If you now selected an object and clicked the user count, the object would receive its very own copy of the material, which can be modified independently of the original that's still used by the other two.
If a data-block has no real users, it'll normally be cleaned up (deleted) when saving the blend-file. To prevent this, you can give it a fake user; that way, it's guaranteed to "survive." Data-blocks with a fake user have an "F" prefix in the dropdown list.
The Outliner can show an overview of all data-blocks without real users in the blend-file. Simply change its Display Mode to Orphan Data.
Creates a new data-block (or duplicates the current one) and selects it.
Opens the File Browser, for importing an image for example.
Unpack the file packed into the current blend-file to an external one.
清除关联， Shift-LMB 重置用户数为0，将数据从文件中彻底删除。
有时需用到一 列 数据块 (如对一个物体使用多个材质)。
Some data-block menus have large preview images in their dropdown instead of just icons and names.
A Data ID field is similar to a Data Block Menu, but is only for selecting (and not for other features like creating new data or managing users).
It can show the following elements:
The text field functions as a search field by matching elements in the list. Press Tab to auto-complete names up to the level where a match is found. If more than one match exists, you have to continue typing. If you type an invalid name, the value will remain unchanged.
一些数据ID框右侧带有 吸管 吸管图标可用 。
Xbutton on the right to clear the reference.
If the selected object in the Target field is a mesh or a lattice, an additional field is displayed where a vertex group can be selected.
If the selected object in the Target field is an armature, an additional field is displayed where a bone can be selected.
Once a bone is selected, a numeric field becomes available for specifying a point on the bone. A value of 0 corresponds to the bone's head, while a value of 1 corresponds to its tail. Any values between these will result in linear interpolation (so a value of 0.5 matches the bone's center).
If the bone is a bendy bone, clicking on this button will make the point follow the curvature of the B-spline between head and tail, rather than simply going in a straight line.