Line

To draw a line:

1. Click the Line icon
2. Click where you want the line to start
3. Click where you want the line to end

Rectangle (rect)

To draw a rectangle:

1. Click the Rectangle icon
2. Click where a vertex of the rectangle should be
3. Click where the opposite of the rectangle should be

Polyline

To draw a polyline (connected line segments, closeness not guaranteed):

1. Click the Polyline icon
2. Click where the first point of the polyline should be
3. Click the subsequent points of the polyline
4. Double click to finish the polyline

To undo adding a point, right click. This is doable if the polyline is not finished.

Polygon

To draw a polygon (connected line segments, closeness guaranteed):

1. Click the Polygon icon
2. Click where the first point of the polygon should be
3. Click the subsequent points of the polygon
4. Double click to finish the polygon, the editor will "close" the polygon if it's not yet closed.

To undo adding a point, right click. This is doable if the polygon is not finished.

Circle

To draw a circle:

1. Click the Circle icon
2. Click where the top-left point of the square containing the circle should be
3. Click where the bottom-right point of the square containing the circle should be

Ellipse

To draw an ellipse:

1. Click the Ellipse icon
2. Click where the top-left point of the rectangle containing the ellipse should be
3. Click where the bottom-right point of the rectangle containing the ellipse should be

Arc

An arc is a portion of a circle containing 3 non-linear points.

To draw an arc:

1. Click the Arc icon
2. Click where the start point of the arc should be
3. Click where the end point of the arc should be
4. Click where the via point of the arc should be

Curve

Scheme-it uses quadratic Bézier curve, i.e. 3 points are required.

To draw a curve:

1. Click curve icon
2. Click where the start point should be
3. Click where the end point should be
4. Click where the "control" point should be

Arrow

You can extend Line, Arc, and Polyline to make Arrows.

1. Click the black cursor icon to switch to Select mode
2. Select the Line or Arc or Polyline you want to make the arrow
3. In the right sidebar, click Style tab
4. Select "Arrow" in "End line" dropdown

Text

To add text:

1. Click the "T" icon
2. Click where you want to place the text.
3. Press Esc if you don't want to add more text boxes

To edit text:

1. Switch to Select mode by clicking the black cursor icon (pressing Esc key also works)
2. Double click the text box
3. Make changes to the text box
4. To finish editing, click somewhere in the canvas but not the current text box

Image

To insert an image:

1. Click the Image icon
2. Either browse the image file on your computer or drop the image to the drop zone
3. Click Insert

Grid

The grid make positioning easier. The grid consists of 10x10 squares.

Showing or hiding the grid is optional.

Snap to grid will adjust the receiver of the click to the nearest vertex of the grid squares.

Zoom

Symbol Editor supports zoom levels from 20% to 400% via a specified scale.

Zoom to fit will try to choose a zoom level so that every element of the symbol is visible for that viewport.

Moving around

You can move around the canvas using one of the following methods:

• Interact with the scrollbar
• Hold the right mouse button on an empty space of the canvas, then move the mouse
• Scroll the middle mouse button, or Shift + scroll the middle mouse button

Basic editing

After an object is selected, its attributes are available in the right sidebar for editing.

Arrange tab

Style tab

Moving

To move the selected object, drag it to the new position. Or press the arrow keys: up, down, left, right.

Resizing

To resize the selected object, drag its resize handlers.