To turn layers on and off in an underlay
To edit the position, scale, or rotation of an underlay from the Properties palette
To edit the position of an underlay using its base grip
To snap to a geometric point on an underlay
To use the DWFADJUST command to adjust the fade, contrast, and monochrome settings of a DWF underlay
To use the PDFADJUST command to adjust the fade, contrast, and monochrome settings of a PDF underlay
To use the DGNADJUST command to adjust the fade, contrast, and monochrome settings of a DGN underlay
To specify a new boundary on a clipped underlay
To edit the existing boundary on a clipped underlay
To show or hide the clipped portion of an underlay