Absolute values are entered with the | key. On most keyboards it is above the Enter key and shares the key with \. To enter | you hold Shift when entering.
On some keyboards, especially languages other than English, this key is show as two vertical dashes - one above the other.
eg.
|
|
Absolute value signs are difficult for FX Equation because they have no "direction". Unlike other brackets, you can not easily tell if | is opening a new absolute value or closing an existing one. IF FX Equation interprets your absolute value incorrectly, you can use this code:
|[ absolute value followed by square bracket opens an absolute value
]| square bracket followed by an absolute value closes an absolute value
The square bracket will not be displayed - it is only used to indicate the direction of the absolute value sign.
is entered as |[ (|[x]| - |[y]|)/2 ]|