Before you start, learn basic operations to create objects and lines. There are 5 ways to create model elements.

1. Using a tool palette

Choose an icon you want to create from the tool palette then click on a diagram.

2. Drag from tree

Drag a model from the tree and drop it on a diagram.
Drag a class

3. Using a Suggest Feature

Click a mini icon that appears when you have a mouse over an object.
If you want to hide these mini icons, click an object or hold [Shift] key down.

4. Double-clicking on the diagram

Directly double-clicking on the diagram creates the following model elements.



Class DiagramClass
UseCase DiagramUseCase
Statemachine DiagramState
Activity DiagramAction
Sequence DiagramLifeline
Communication DiagramLifeline
Component DiagramComponent
Composite Structure DiagramStructured Class
Data Flow DiagramProcess Box
ER DiagramER Entity
Mind MapRoot Topic
Requirement DiagramRequirement

5. Pasting texts from Clipboard

You can create models by simply pasting texts on a diagram.
Since version 8.5, you are able to add Attributes and Operations to a Class by pasting texts and also add ER Attributes to ER Entity.
Create models by pasting text

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Create objects in a row

There are two ways to create the same model element continuously.

  1. Hold [Shift Key] down
    Keep clicking on a diagram with holding the [Shift] key down.
  2. Turn on the [Continuous] mode
    Click the [Continuous] mode on the tool palette.
    Continuous mode
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Wrap text

You can wrap text with [SHIFT+ENTER], [ALT+ENTER] or [CTRL+ ENTER].
However, you cannot wrap the text for some models.

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Specify color

You can specify colors for diagram elements including line elements. There are two ways to do so:

From Toolbar

Before you create diagram elements, choose a color you want to use then create diagram elements.
(You can also change colors for existing diagram elements.)

By selecting [Set Color] option, you can call detailed color choosers/palettes.

There are two palettes you can switch between [Custom] and [Swatches].

Also, enabling [Apply to Created Elements] option maintains the color selection, so that the diagram elements you will create stay in the selected color until you turn it off.
Apply to Created Elements Option

From [System Properties]

You can configure default color for each diagram element type. To do so, go to [Tools] – [System Properties] – [Default Item Color]. Then select color and click [Apply] – [OK].


  • Enabling [Apply to Created Elements] on takes precedence over the default color specified in the [Tools] – [System Properties] – [Default Item Color].

TIPS: Set default size of model elements


You can set default size for all the model elements in the [Tool] – [System Properties] – [Default Item Size].

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Expand and reduce space

When you want to expand the space before you insert objects or reduce space to make a better diagram appearance, use this [Gap expander/remove] tool.
Gap Expander and Remover Option

Expand the space

Using a gap expander to make space

Reduce the space

Using Gap remover to reduce unnecessary space