The pleats are sharpest when the cords are drawn up tightly. Most tapes have more than 1 row of pockets for the hooks to adjust the height of the heading. Use the tape for curtains whose top is behind a pelmet or valance. They create clusters of small pleats at intervals, Curtains must be twice the track width to make the cluster pleats. A lightweight version is suitable for net curtains.
Some tapes have three rows of pockets for hooks.
Use the top row if the curtain is to hang below a pole. Use a lower row to make the heading stand up the required amount to conceal a track. Stuff the pleats with cotton wool or tissue paper to maintain their shape. Remove the stuffing for washing or cleaning the curtains. A lightweight tape is made for net curtains.