OK, there are some X.. attr in FEd
For example X2 is player agression (+1)...
Who knows others Xs?

Another curious thing about these X's is that if you use the in-game editor to modify your players' attributes, the values of the last three X's will be reset to 7.


EFC

can't say for sure, but I believe some are related to height and width of the players

The X values are as follows:

X1 - Player's overall rating, the starting line-up is generated by this value
X2 - Player's agression
X3 - Player's shooting consistency
X4 - Player's passing consistency
X5 - Player's speed/sprint consistency
X6 - Player's height