This is the tile image set used in FCB V4.

The meaning defined for each tile is explained below.

Tiles 'a' to 'd' denote the end or the cord being used to tie the knot with, often called the 'Working End'  some knots are tied 'inline' and will not have a 'Working end', for these use the 'cord line' symbols 'm' to 'p'.

Tiles 'e' and 'f' simply denote a horizontal and vertical connection.

Tiles 'g' and 'h' denote one cord crossing over another.  The solid line denotes the cord on top and the broken line denotes the cord below.

Tiles 'i' to 'l' simply denote a curve of the cord.

Tiles 'm' to 'p' are 'cord line' symbols and can be used to denote two meanings.  Where the arrow points away from the knot, the tile denotes 'the rest of the cord', sometimes called 'The Standing Part' (see Glossary).  If both ends from teh cord are denoted by these tiles it means that the knot has been tied in the middle of the cord without access to an 'end'.

Where the arrows are arranged to point into the knot, then they are used to indicate the location of a loop.  This system cannot be utilised to describe multiple loop knots because it is not possible to unambiguously describe which ends belong to which loop which is normally important.

Tiles 'q' and 'r' denote a cord passing behind a spar or some solid object.  this symbol is used when creating diagrams of hitches.