Tent-prop

• “120… Prop; the letter Samekh SMK” -Sepher Sephiroth
• “120. SMK, Samech, a prop.” -Liber LVIII

Tent-flap

• “Daleth ד a Door, refers to the position of the path as joining Chokmah and Binah. It is the gate of the Supernals. Again, it is the letter of Venus; and shows the sexual symbolism. The shape suggests the porch of a doorway, or a porched tent-flap.” -Liber 777 revised

See also:

• Cone (the shape of a tent is conical)