What feature does the Constrain Parallel tool provide while digitizing?

The Constrain Parallel tool is specifically designed to aid users in creating new line segments that are parallel to an existing line during the digitizing process in GIS software. This functionality is particularly useful for maintaining geometrical accuracy and ensuring that new features align properly with existing ones, which is essential in tasks such as urban planning or development where alignment is crucial. By using this tool, users can draw additional lines effortlessly parallel to a reference line, which can streamline the workflow and enhance precision in the digitization process.

Creating angles is a separate functionality that pertains more to manipulating the orientation of the segment being created rather than ensuring it aligns parallel to an existing feature. Snapping to the nearest feature focuses on connecting elements based on proximity, while the avoidance of snapping altogether eliminates the guidance that helps in achieving precise digitization, which goes against the aim of the Constrain Parallel tool to create orderly and systematically aligned features.