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index
nth
Returns the specified member of a comma-delimited string.
$(index, which, string)
Assumes that the string argument contains one or more values delimited by
the macro argument separator character, the comma. The which argument
selects one of these values to be extracted, with the first item numbered 0.
This function is most frequently used to extract X, Y, or Z coordinate values
from point coordinates returned by $(getvar).
Quick Reference
System Variables
MENUECHO
Sets menu echo and prompt control bits.
Evaluates and returns the argument selected by which.
$(nth, which, arg0 [, arg1,…, arg7])
If which is 0, nth returns arg0, and so on. Note the difference between $(nth)
and $(index); $(nth)returns one of a series of arguments to the function,
while $(index) extracts a value from a comma-delimited string passed as a
single argument. Arguments not selected by which are not evaluated.
Quick Reference
System Variables
MENUECHO
340 | Chapter 5 DIESEL
Sets menu echo and prompt control bits.