When the Pipe or Pipe Placeholder tool is selected, the Modify | Place Pipe tab provides the following options for placing piping:
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Justification: opens the Justification Setting dialog where you can specify Horizontal Justification, Horizontal Offset, and Vertical Justification for the pipe. Note: This options is not available when the Pipe Placeholder tool is selected. -
Automatically Connect: lets you automatically connect to the snaps on a component when starting or ending a pipe segment. This is useful for connecting segments at different elevations. However, when drawing pipe along the same path as another pipe at a different offset, clear Automatically Connect to avoid making an unintentional connection. 
Inherit Elevation: inherits the elevation of the element being snapped to. -
Inherit Size: inherits the size of the element being snapped to. 
Slope Off: draws pipe without slope. 
Slope Up: draws pipe with slope up. 
Slope Down: draws pipe with slope down. - Slope Value: specifies a slope value for drawing sloped pipe when Slope Up or Slope Down are enabled.
Show Slope Tooltip: displays slope information while drawing sloped pipe. 
Ignore Slope to Connect: controls whether sloped pipe connects using the current slope value or connects directly regardless of the slope value. -
Tag on Placement: applies the default annotation tag to a piping segment when it is placed in the view.