Pinned objects will show a thumbtack when selected. Toggle it back on when you need to make adjustments to the pinned element. Simply toggle the “Select Pinned Element” button at the bottom right corner of your Revit model to disable, and your pinned element will no longer be selectable. Revit tries to visually highlight any elements that your cursor hovers over, and may take up some processing time when highlighting an extremely detailed element. This is helpful when an extremely large external Revit model is linked to the working Revit model. Pinned objects can also be set to not select or highlight when the cursor highlights over the pinned object.

You can pin objects by selecting the pin object icon under the Modify Tab, or by typing PN while the object is selected. If you are referencing or overlaying an external dwg, rvt, or other types of drawings files, make sure they are pinned down to ensure that these reference files do not shift and cause inaccuracies in modeling. Learn what construction technology leaders say about 4D BIM?

Autodesk revit 2018 installation failed