Customizing Slack Percentages in the Route Properties and Route Segment PropertyManagers In the Route Properties and the Route Segment Properties PropertyManagers, you can define a custom value for the Slack Percentage for individual route segments. This value overrides the slack percentage specified in Tools > Options > System Options > Routing. Parent topicRouting Create a Flattened Drawing with Cleaner Output Enhancing Pipe and Tube Modifications Generate Guidelines to Follow a Route Path