# REVCLOUD Command
[GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [Commands](Help%20System/GSTARCAD/2022/Commands/(Commands).md) → [R](Help%20System/GSTARCAD/2022/Commands/R/(R).md)
## Function Description:
This command is used to create revision cloud lines by polylines.
**Note:** The REVCLOUD command saves the previously used arc length in registry. If the scale factors are different in
the drawing, users can use the value of DIMSCALE plus scale factor to keep
consistency. Users can drag cursor to create new revision clouds and convert closed objects (such as elliptical arcs or polylines) to revision clouds. The new revision cloud line is a polyline.
## Command Access:
> **Icon:**
> 
> **Menu:** Draw \> Revision Cloud
> **Ribbon:** Home \> Draw \> Revision Cloud
> **Toolbar:** Draw \> Revision Cloud
> **Command:** REVCLOUD
> **Alias:** /
## Command Prompts:
Specify start point or \[Arc length/Object/Style\] \<Object\>:
## **Arc length**
Specifies the length of arc in revision cloud.
The maximum of arc length can not exceed three times of the minimum arc length.
## Object
Specifies an object to be converted to a revision cloud.
## **Style**
Specifies the style of the revision cloud.