The Map Window Preferences dialog box has a Display Snap Radius check box that controls whether or not the snap radius displays when Snap mode is on. The snap tolerance (in pixels) can also be selected.
On the PRO tab, click Options, and Map Window to open the Map Preferences dialog box.
On the Editing tab, under the Digitizing Options section, you can change the snap tolerance to make the snap radius larger or smaller (measured in pixels).
If you clear Display Snap Radius check box, then the radius does not display when snap mode is turned on. Remember to click OK to save your preferences.
Move Duplicate Nodes
In most maps, nodes of various objects are usually connected, especially for adjoining streets and boundaries that share a common border. Using the Move Duplicate Nodes Option in the Map Preferences dialog box, you can specify where MapInfo Pro looks for connected nodes in order to move them in unison. Click the None of the Layers button to turn the option off. Click the Same Layer button, so that connected nodes in the same layer are moved when one of them is moved.