# DIMCONSTRAINT Command
[GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [D](Help%20System/GSTARCAD/2027/Commands/D/(D).md)
## Function Description:
Parametric (Dimensional Constraints) is a powerful tool for controlling the size and position relationships of graphics objects, ensuring that the size and shape of graphics remain consistent during editing.
Including: 1) 7 kinds of dimensional constraints, respectively: linear, horizontal, vertical, aligned, angular, radius, diameter; 2) 2 clock auxiliary functions: form, convert. This feature is only available in the Premium version.
## Command Access:
Icon: 
Menu Item: /
Function Area: /
Toolbar: /
Command Line: DIMCONSTRAINT
Command Alias:/
## Command Prompts:
```
Enter a dimensional constraint option [Linear(L)/Horizontal(H)/Vertical(V)/Aligned(A)/ANgular(AN)/Radius(R)/Diameter(D)/Form(F)/Convert(V)]:
Each branch option of this command is equivalent to each of the following individual commands
```
**The following commands are equivalent to each DIMCONSTRAINT option:**
## Linear
Constrain the horizontal or vertical distance between two points.
## Horizontal
Constrains the X distance between points on an object, or between two points on different objects.
## Vertical
Constrains the Y distance between points on an object, or between two points on different objects.
## Aligned
Constrains the distance between two points on an object or between two points on different objects.
## ANgular
Constrains the angle between line or polyline segments, the angle swept out by an arc or a polyline arc segment, or the angle between three points on objects.
## Radius
Constrains the radius of a circle or an arc.
## Diameter
Constrains the diameter of a circle or an arc.
## Form
Specifies whether the dimensional constraint being created is dynamic or annotational.
## Convert
Converts associative dimensions to dimensional constraints.
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[Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_D/DIMCONSTRAINT.html) · © Gstarsoft Co., Ltd.