Template:Knight/doc

Regarding:

The "#if" (called a parser function). Is made for the knights armor page, which is a combination of all four items. This #if line says if there is an entry  then add the first line (as shown on Knights Armor):
 * The Knights armor is created with four pieces of clothing which

... otherwise, if there is only just add the second line (which is on all 4 items pages):
 * The is one of four items for the Knight set of clothing, which when combined with the 3 other items,