===== Field value ======

==== f( fieldno ) ====

Return the current value of a field.

=== Description ===

<code>f( fieldno )</code>

This function returns the current value of a given field.

=== Parameters ===

| ''fieldno'' | Field number (1 through 90) |

=== Return value ===

Returns the current value of the field.

=== Example usage ===

<code>f(15)</code>