# REVCLOUD Command [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [Commands](Help%20System/GSTARCAD/2020/Commands/(Commands).md) → [R](Help%20System/GSTARCAD/2020/Commands/R/(R).md) The REVCLOUD command is used to create revision cloud lines by polylines. Command Access: > **Ribbon:** Home \> Draw \> Polyline \> Revision Cloud **Menu:** Draw \> Revision Cloud **Command:** REVCLOUD Command Prompts: > Minimum arc length: 15 Maximum arc length: 15 style: Normal > Specify start point or \[Arc length/Object/Style\]: > Guide crosshairs along cloud path... Function Description:  **Note:** the REVCLOUD command will save the previously used arc length in registry. If the scale factors are different in drawing, users could use the value of DIMSCALE plus scale factor to keep consistency. Users could drag cross cursor to create new revision clouds and convert close objects (such as elliptic arcs or polylines) to revision clouds. The new revision cloud line is a polyline. Relative Glossary: **Arc length:** Specify the length of arc in revision cloud. The maximum of arc length could not exceed three times of the minimum arc length. Object: Specify the object to be converted to a revision cloud line. **Style:** Specify the style of revision cloud line. ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/R/REVCLOUD%20Command--3001dc47e672.md) · [GstarCAD 2017](../../../2017/Commands/R/REVCLOUD%20Command--3001dc47e672.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/R/REVCLOUD%20Command--3001dc47e672.md) · [GstarCAD 2019](../../../2019/Commands/R/REVCLOUD%20Command--3001dc47e672.md) · [GstarCAD 2021](../../../2021/Commands/R/REVCLOUD%20Command--3001dc47e672.md)