Project: HiCAD Parametrics
In the Sketch HCM the constraints will take into account whether the use of external references has been activated or deactivated. An external reference exists if a HCM constraint refers to a part that does not belong to this sketch.
In existing sketches the use of external references is active by default, in order to keep the existing behaviour of these sketches. Created new sketches behave according top the settings specified in the Configuration Editor: The value chosen at System settings > Sketch HCM > Use external references determines your default value. After new installations, external references are not used by default.
If you right-click on the empty area of the HCM window of the ICN, a context menu with the options External reference: Use or ... do not use, respectively, will be displayed, which shows you the current setting for external references. After choosing this option, a dialogue window will be displayed, allowing you to choose between the settings Use and Do not use.
HCM constraints with external references are marked with the 
icon in the ICN.
Activated external references: If the part to which an external reference refers is moved or changed in some other way, the HCM model will be adjusted to it. If this updating does not take place automatically, it can be carried out manually by choosing Sketch > HCM > Update system. If the part is deleted, the HCM constraint will be invalidated and deactivated.
Deactivated external references: The part to which the external reference refers has no influence on it. Even a manual updating of the HCM model will have no effect. However, the link between the HCM constraint and the part will be preserved, meaning that the external reference may be reactivated with the corresponding function.
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