Trim:  A line drawn through the farthest forward and farthest aft line attachment points (excluding control line attachment points). See Figure 1b.  Cascade: A line attached with one end at the canopy and the other end to an intermediate point  of an adjacent line. Contrast with  Continuous.  Continuous: A line attached with one end at the canopy and the other end at the riser of  connector link. Contrast with  Cascade .  Control: A line fastened to the trailing edge of the canopy, used to steer and modulate the  forward speed and descent rate of the parachute. Also known as steering or brake line.  Flare: A control line intended primarily for flaring the canopy for landing, but which may  also for steering. Also known as  Secondary  control lines, in which case the remaining  control lines are known as  Primary  control lines. Brake-Toggle: When a control line is constructed in sections, that portion of the line  between the toggle and the deployment set eye (“cat-eye”).  Lower: When a control line is constructed in sections, that portion of the line between  the deployment set eye and the upper portion.  Upper: When a control line is constructed in sections, that portion of the line between  the canopy and where it converges with other lines attached to the canopy.  Line (Rigging), Identification System for: Suspension lines: lettered “A,” “B,” “C,” . . . from front to rear along each load-bearing  seam. Numbered from outboard to inboard (outboard lines numbered “1”; see Figure 2a )  or inboard to outboard (lines on center load-bearing seams numbered “1”; see Figure 2b).  Control lines: numbered by rib seam, including non-load-bearing ribs, from outboard to  inboard. See Figures 2a and 2b.  Suspension:  One of the lines that carries the load from the canopy surface to the risers. Control  lines are usually not considered suspension lines.  Pilot Chute Controlled Reefing (PCR):  A parachute reefing system that use s  the drag of the pilot chute  to modulate the opening rate of the canopy.  Planform:  The overall shape of the wing as viewed from above, perpendicular to the chord line.  Quarter Chord Point: a point on the chord line one quarter of the distance from the nose to the tail of  an airfoil.  Removable Deployment System (RDS): A slider variation that permits the slider to be removed and  stowed separately after deployment. “Full RDS” is a further variation that also permits the pilot chute,  bridle, and deployment bag to be removed and stowed after deployment.  Rib:  A section of fabric installed between the upper and lower surfaces of a canopy. Used to establish the  airfoil shaped of the canopy. Rib numbering systems (for example, from outboard to inboard, or from  inboard to outboard) vary from manufacturer to manufacturer.  Page 3 of 8 A-5 Change 1 (December 2015)