Retractable clip assembly

A retractable clip assembly has a cap with a recess, a fulcrum within the cap, a clip arm mounted for movement in the recess, and a spring that lies between the cap and the clip arm. The clip arm is permanently affixed to the spring. The clip arm has a retracted position, an intermediate position, and an extended position. In the retracted position, the clip arm resides in a continuous plane with the cap profile. In the intermediate position, the front tip of the clip arm is tilted up and out of the recess via the spring pivoting against the fulcrum. In the extended position, the back end of the clip arm extends out by feeding material into the space under the clip arm.