Topologie

The Topology submenu can be found in the Object menu.

Join

Choose the Join function in the Topology submenu of the Object menu or in the Edit Functions Toolbar. This function is active if a line object is selected.

Use this function to adjust adjoining line ends so that they coincide. Only line objects with the same symbol are joined. This is especially useful when continuing a line object such as a contour. Note that the objects remain independent objects, but the coordinates of the end vertices are equalized. If you want to merge objects, choose the Merge command.

Automatic Joining

If you enable Automatic Joining in the Edit Functions Toolbar, end points of lines are joined automatically when finish drawing a line near another line end.

Tolerance Value

Define how close two line end points have to be for joining them in the Drawing and Editing category of OCAD Preferences.

Select Duplicate Objects

Note: This article is edited at the moment.

This command compares all map objects with each-other. If two objects are identical one object it is selected.

Objects with different symbols whose geometry is identical are not selected.

Explanation from the Old Wiki:
'Object' -> 'Topology' -> 'Select Duplicate Objects': Choose this comment to select all duplicate objects from the map. This command compares the geometry and the object's properties like symbol number or angle for point object and select the duplicates.

Select Self-Intersected Objects

This command selects all line, area and line text objects with a self-intersecting geometry.

Select Line Text Objects with too Short Line

This command selects all line text objects whose text is longer than the line length. This may happened when the text symbol's font size was increased.

Close Area Objects

ToDo

Remove Overshoots and Undershoots

ToDo

Insert Intersections

ToDo